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Электронный компонент: OM5284EA01

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Philips
Semiconductors
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
Preliminary specification
1996 Nov 01
INTEGRATED CIRCUITS
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
2
1996 Nov 01
DESCRIPTION
The OM5234 and OM5284 single-chip 8-bit microcontrollers are
manufactured in an advanced CMOS process and are derivatives of
the 80C51 microcontroller family. The OM5234 and OM5284 are
pre-programmed devices for specific applications. Unless
specifically stated otherwise, all references to OM5234 apply equally
to OM5284.
The OM5234 contains a non-volatile 16k
8 read-only program
memory, a volatile 256
8 read/write data memory, four 8-bit I/O
ports, two 16-bit timer/event counters (identical to the timers of the
80C51), a multi-source, two-priority-level, nested interrupt structure,
UART and on-chip oscillator and timing circuits.
FEATURES
80C51 central processing unit
6k
8 ROM
256
8 RAM
Two standard 16-bit timer/counters
Four 8-bit I/O ports
Full-duplex UART facilities
Power control modes
Idle mode
Power-down mode
ROM code protection
ORDERING INFORMATION
OM5234
F T P
Device
OM5234
ROM code for application
5XX, etc.
Frequency Range
F = 3.5 to 16MHz
I = 3.5 to 24MHz
Package designator
A = Plastic Leaded Chip Carrier
B = Plastic Quad Flat Package
P = Plastic Dual In-Line Package
OM5284 X Y ZZ
Device
OM5284
ROM code for application
01, 02, 03
Frequency Range
E = 3.5 to 16MHz
I = 3.5 to 24MHz
Package designator
A = Plastic Leaded Chip Carier
B = Plastic Quad Flat Package
P = Plastic Dual In-Line Package
/ YYY
Temperature Range
B = 0 to 70
C
/
PART NUMBER
TEMPERATURE RANGE
C
AND PACKAGE
FREQUENCY
(MHz)
DRAWING
NUMBER
OM5234/FBB/YYY
0 to 70
C, Plastic Quad Flat Package
16
SOT307-2
OM5234/FBP/YYY
0 to 70
C, Plastic Dual In-Line Package
16
SOT129-1
OM5234/FBA/YYY
0 to 70
C, Plastic Leaded Chip Carrier
16
SOT187-2
OM5284EBYY
0 to 70
C, Plastic Quad Flat Package
16
SOT307-2
OM5284EAYY
0 to 70
C, Plastic Leaded Chip Carrier
16
SOT187-2
OM5284EPYY
0 to 70
C, Plastic Dual In-Line Package
16
SOT129-1
LOGIC SYMBOL
POR
T
0
POR
T
1
POR
T
2
POR
T
3
ADDRESS AND
DATA BUS
ADDRESS BUS
V
SS
V
CC
AL
TERNA
TE
FUNCTIONS
RST
XTAL1
XTAL2
EA
ALE
PSEN
RxD
TxD
INT0
INT1
T0
T1
WR
RD
SU00800
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
3
PIN CONFIGURATIONS
DUAL IN-LINE PACKAGE
PIN FUNCTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
RST
P3.0/RxD
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P1.7
P3.6/WR
P3.7/RD
XTAL2
XTAL1
V
SS
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15
PSEN
ALE
EA
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
V
DD
DUAL
IN-LINE
PACKAGE
SU00802
PLASTIC LEADED CHIP CARRIER
PIN FUNCTIONS
PLCC
6
1
40
7
17
39
29
18
28
Pin
Function
1
NC*
2
P1.0
3
P1.1
4
P1.2
5
P1.3
6
P1.4
7
P1.5
8
P1.6
9
P1.7
10
RST
11
P3.0/RxD
12
NC*
13
P3.1/TxD
14
P3.2/INT0
15
P3.3/INT1
Pin
Function
16
P3.4/T0
17
P3.5/T1
18
P3.6/WR
19
P3.7/RD
20
XTAL2
21
XTAL1
22
V
SS
23
NC*
24
P2.0/A8
25
P2.1/A9
26
P2.2/A10
27
P2.3/A11
28
P2.4/A12
29
P2.5/A13
30
P2.6/A14
Pin
Function
31
P2.7/A15
32
PSEN
33
ALE
34
NC*
35
EA
36
P0.7/AD7
37
P0.6/AD6
38
P0.5/AD5
39
P0.4/AD4
40
P0.3/AD3
41
P0.2/AD2
42
P0.1/AD1
43
P0.0/AD0
44
V
DD
SU00798
* DO NOT CONNECT
PLASTIC QUAD FLAT PACK
PIN FUNCTIONS
Pin
Function
1
P1.5
2
P1.6
3
P1.7
4
RST
5
P3.0/RxD
6
V
SS4
7
P3.1/TxD
8
P3.2/INT0
9
P3.3/INT1
10
P3.4/T0
11
P3.5/T1
12
P3.6/WR
13
P3.7/RD
14
XTAL2
15
XTAL1
Pin
Function
16
V
SS1
17
NC*
18
P2.0/A8
19
P2.1/A9
20
P2.2/A10
21
P2.3/A11
22
P2.4/A12
23
P2.5/A13
24
P2.6/A14
25
P2.7/A15
26
PSEN
27
ALE
28
V
SS2
29
EA/V
PP
30
P0.7/AD7
Pin
Function
31
P0.6/AD6
32
P0.5/AD5
33
P0.4/AD4
34
P0.3/AD3
35
P0.2/AD2
36
P0.1/AD1
37
P0.0/AD0
38
V
DD
39
V
SS3
40
P1.0
41
P1.1
42
P1.2
43
P.13
44
P1.4
PQFP
44
34
1
11
33
23
12
22
SU00799
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
4
PIN DESCRIPTIONS
PIN NUMBER
MNEMONIC PLCC
QFP
DIP
TYPE
NAME AND FUNCTION
V
SS
22
6, 16,
28, 39
20
I
Ground: 0V reference. With the QFP package, all V
SS
pins (V
SS1
to V
SS4
) must be
connected.
V
DD
44
38
40
I
Power Supply: This is the power supply voltage for normal, idle, and power-down
operation.
P0.00.7
4336
3730
3932
I/O
Port 0: Port 0 is an open-drain, bidirectional I/O port. Port 0 pins that have 1s written to
them float and can be used as high-impedance inputs. Port 0 is also the multiplexed
low-order address and data bus during accesses to external program and data memory.
In this application, it uses strong internal pull-ups when emitting 1s.
P1.0P1.7
29
4044,
13
18
I/O
Port 1: Port 1 is an 8-bit bidirectional I/O port with internal pull-ups, except P1.6 and P1.7,
which are open drain for OM5234 (only). Port 1 pins that have 1s written to them are
pulled high by the internal pull-ups and can be used as inputs. As inputs, port 1 pins that
are externally pulled low will source current because of the internal pull-ups. (See DC
Electrical Characteristics: I
IL
). Alternate functions include:
P1.6
8
2
7
I/O
Bidirectional I/O with internal pull-ups (OM5284), and open drain for (OM5234).
P1.7
9
3
8
I/O
Bidirectional I/O with internal pull-ups (OM5284), and open drain for (OM5234).
P2.0P2.7
2431
1825
2128
I/O
Port 2: Port 2 is an 8-bit bidirectional I/O port with internal pull-ups. Port 2 pins that have
1s written to them are pulled high by the internal pull-ups and can be used as inputs. As
inputs, port 2 pins that are externally being pulled low will source current because of the
internal pull-ups. (See DC Electrical Characteristics: I
IL
). Port 2 emits the high-order
address byte during fetches from external program memory and during accesses to
external data memory that use 16-bit addresses (MOVX @DPTR). In this application, it
uses strong internal pull-ups when emitting 1s. During accesses to external data memory
that use 8-bit addresses (MOV @Ri), port 2 emits the contents of the P2 special function
register.
P3.0P3.7
11,
1319
5,
713
1017
I/O
Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins that have
1s written to them are pulled high by the internal pull-ups and can be used as inputs. As
inputs, port 3 pins that are externally being pulled low will source current because of the
pull-ups. (See DC Electrical Characteristics: I
IL
). Port 3 also serves the special features of
the 80C51 family, as listed below:
11
5
10
I
RxD (P3.0): Serial input port
13
7
11
O
TxD (P3.1): Serial output port
14
8
12
I
INT0 (P3.2): External interrupt
15
9
13
I
INT1 (P3.3): External interrupt
16
10
14
I
T0 (P3.4): Timer 0 external input
17
11
15
I
T1 (P3.5): Timer 1 external input
18
12
16
O
WR (P3.6): External data memory write strobe
19
13
17
O
RD (P3.7): External data memory read strobe
RST
10
4
9
I
Reset: A high on this pin for two machine cycles while the oscillator is running, resets the
device. An internal diffused resistor to V
SS
permits a power-on reset using only an
external capacitor to V
CC
.
ALE
33
27
30
I/O
Address Latch Enable: Output pulse for latching the low byte of the address during an
access to external memory. In normal operation, ALE is emitted at a constant rate of 1/6
the oscillator frequency. Note that one ALE pulse is skipped during each access to
external data memory.
PSEN
32
26
29
O
Program Store Enable: Read strobe to external program memory via Port 0 and Port 2.
It is activated twice each machine cycle during fetches from the external program
memory. When executing out of external program memory, two activations of PSEN are
skipped during each access to external data memory. PSEN is not activated (remains
HIGH) during fetches from external program memory. PSEN can sink/source 8 LSTTL
inputs and can drive CMOS inputs without external pull-ups.
EA
35
29
31
I
External Access: If during a RESET, EA is held at TTL, level HIGH, the CPU executes
out of the internal program memory ROM provided the Program Counter is less than
16384. If during a RESET, EA is held at TTL LOW level, the CPU executes out of external
program memory. EA is not allowed to float.
XTAL1
21
15
19
I
Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock
generator circuits.
XTAL2
20
14
18
O
Crystal 2: Output from the inverting oscillator amplifier.
NOTE:
To avoid "latch-up" effect at power-on, the voltage on any pin at any time must not be higher than V
DD
+ 0.5V or V
SS
0.5V, respectively.
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
5
DC ELECTRICAL CHARACTERISTICS
V
SS
= 0V, V
DD
= 5V
10%, T
amb
= 0
C to +70
C
TEST
LIMITS
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
IL
Input low voltage, except EA, P1.6, P1.7
0.5
0.2V
DD
0.1
V
V
IL1
Input low voltage to EA
0.5
0.2V
DD
0.3
V
V
IL2
Input low voltage to P1.6, P1.7
0.5
0.3V
DD
V
V
IH
Input high voltage, except XTAL1, RST, P1.6, P1.7
0.2V
DD
+0.9
V
DD
+0.5
V
V
IH1
Input high voltage, XTAL1, RST
0.7V
DD
V
DD
+0.5
V
V
OL
Output low voltage, ports 1, 2, 3, except P1.6, P1.7
I
OL
= 1.6mA
6, 7
0.45
V
V
OL1
Output low voltage, port 0, ALE, PSEN
I
OL
= 3.2mA
6, 7
0.45
V
V
OL2
Output low voltage, P1.6, P1.7
I
OL
= 3.0mA
0.4
V
V
OH
Output high voltage, ports 1, 2, 3, ALE, PSEN
8
I
OH
= 25
A
0.75V
DD
V
I
IL
Logical 0 input current, ports 1, 2, 3, except P1.6, P1.7
V
IN
= 0.45V
50
A
I
TL
Logical 1-to-0 transition current, ports 1, 2, 3, except P1.6, P1.7
See note 5
650
A
I
L1
Input leakage current, port 0, EA, P1.6, P1.7
0.45V < V
I
< 4.7V
10
A
I
DD
Power supply current:
Active mode @ 16MHz
1, 9
V
DD
=5.5V
32.0
mA
Idle mode @ 16MHz
2, 9
6
mA
Power down mode
3, 4
50
A
R
RST
Internal reset pull-down resistor
40
225
k
C
IO
Pin capacitance
15
pF
NOTES:
1. The operating supply current is measured with all output pins disconnected; XTAL1 driven with t
r
= t
f
= 5ns;
V
IL
= V
SS
+ 0.5V; V
IH
= V
DD
0.5V; XTAL2 not connected; EA = RST = Port 0 = P1.6 = P1.7 = V
DD
.
2. The idle mode supply current is measured with all output pins disconnected; XTAL1 driven with t
r
= t
f
= 5ns; V
IL
= V
SS
+ 0.5V;
V
IH
= V
DD
0.5V; XTAL2 not connected; Port 0 = P1.6 = P1.7 = V
DD
; EA = RST = V
SS
.
3. The power-down current is measured with all output pins disconnected; XTAL2 not connected; Port 0 = P1.6 = P1.7 = V
DD
;
EA = RST = V
SS
.
4. 2V
V
PD
V
DD
max.
5. Pins of ports 1 , 2, and 3 source a transition current when they are being externally driven from 1 to 0. The transition current reaches its
maximum value when V
IN
is approximately 2V.
6. Capacitive loading on ports 0 and 2 may cause spurious noise to be superimposed on the V
OL
s of ALE and ports 1 and 3. The noise is due
to external bus capacitance discharging into the port 0 and port 2 pins when these pins make 1-to-0 transitions during bus operations. In the
worst cases (capacitive loading > 100pF), the noise pulse on the ALE pin may exceed 0.8V. In such cases, it may be desirable to qualify
ALE with a Schmitt Trigger, or use an address latch with a Schmitt Trigger STROBE input.
7. Under steady state (non-transient) conditions, I
OL
must be externally limited as follows: Maximum I
OL
= 10mA per port pin; Maximum
I
OL
= 26mA total for Port 0; Maximum I
OL
= 15mA total for Ports 1, 2, and 3; Maximum I
OL
= 71mA total for all output pins. If I
OL
exceeds the
test conditions, V
OL
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test conditions.
8. Capacitive loading on ports 0 and 2 may cause the V
OH
on ALE and PSEN to momentarily fall below the 0.9V
DD
specification when the
address bits are stabilizing.
9. I
DDMAX
for other frequencies can be derived from Figure 1, where FREQ is the external oscillator frequency in MHz. I
DDMAX
is given in mA.
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
6
40
30
20
10
0
0
4
8
12
16
(1) MAXIMUM OPERATING MODE: VDD = VDDmax
(2) MAXIMUM IDLE MODE: VDD = VDDmax
fXTAL1 (MHz)
IDD
(mA)
40
30
20
10
0
0
4
8
12
16
(2)
(1)
24
50
IDD
(mA)
fXTAL1 (MHz)
These values are valid within the specified frequency range.
(1) MAXIMUM OPERATING MODE: VDD = VDDmax
(2) MAXIMUM IDLE MODE: VDD = VDDmax
These values are valid within the specified frequency range.
(1)
(2)
SU00801
Figure 1. I
DD
vs. Frequency
AC ELECTRICAL CHARACTERISTICS
1, 2
16MHz CLOCK
VARIABLE CLOCK
SYMBOL
FIGURE
PARAMETER
MIN
MAX
MIN
MAX
UNIT
External Clock
t
CHCX
2
High time
3
20
20
t
CLCL
t
LOW
ns
t
CLCX
2
Low time
3
20
20
t
CLCL
t
HIGH
ns
t
CLCH
2
Rise time
3
20
20
ns
t
CHCL
2
Fall time
3
20
20
ns
NOTES:
1. Parameters are valid over operating temperature range unless otherwise specified.
2. Load capacitance for port 0, ALE, and PSEN = 100pF, load capacitance for all other outputs = 80pF.
3. These values are characterized but not 100% production tested.
VCC0.5
0.45V
0.2VCC+0.9
0.2VCC0.1
NOTE:
AC inputs during testing are driven at V
CC
0.5 for a logic `1' and 0.45V for a logic `0'.
Timing measurements are made at V
IH
min for a logic `1' and V
IL
max for a logic `0'.
SU00010
Figure 2. AC Testing Input/Output
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
7
PLCC44:
plastic leaded chip carrier; 44 leads
SOT187-2
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
8
DIP40:
plastic dual in-line package; 40 leads (600 mil)
SOT129-1
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
9
QFP44:
plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 x 10 x 1.75 mm
SOT307-2
Philips Semiconductors
Preliminary specification
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
1996 Nov 01
10
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.
LIFE SUPPORT APPLICATIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 940883409
Telephone 800-234-7381
DEFINITIONS
Data Sheet Identification
Product Status
Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Philips Semiconductors and Philips Electronics North America Corporation
register eligible circuits under the Semiconductor Chip Protection Act.
Copyright Philips Electronics North America Corporation 1996
All rights reserved. Printed in U.S.A.
Philips
Semiconductors