COP8ACC7
8-Bit CMOS OTP Microcontroller with 16k Memory and
High Resolution A/D
General Description
The COP8ACC7 OTP (One Time Programmable) microcon-
trollers are highly integrated COP8
TM
Feature core devices
with 16k memory and advanced features including a High-
Resolution A/D. This multi-chip CMOS device is suited for
applications requiring a full featured controller with a high
resolution A/D (only one external capacitor required), and for
pre-production devices for a ROM design. Pin and software
compatible (different V
CC
range) 4k ROM versions are avail-
able (COPACC5). Erasable windowed versions are available
for use with a range of COP8 software and hardware devel-
opment tools.
Family features include an 8-bit memory mapped architec-
ture, 4 MHz CKI with 2.5 s instruction cycle, two external
clock options (XE = Crystal; RE = RC), 6 channel A/D with
12-bit resolution, analog capture timer, analog current
source and V
CC
/2 reference, one multi-function 16-bit timer/
counter, MICROWIRE/PLUS
TM
serial I/O, two power saving
HALT/IDLE modes, MIWU, high current outputs, software
selectable I/O options, WATCHDOG
TM
timer and Clock Moni-
tor, 2.7V to 5.5V operation, program code security, and
20/28 pin packages.
Device included in this datasheet is:
Device
Memory (bytes)
RAM (bytes)
I/O Pins
Packages
Temperature
COP8ACC7xxx9
16k OTP EPROM
128
15/23
20 SOIC, 28 DIP/SOIC
0 to +70C
COP8ACC7xxx8
16k OTP EPROM
128
15/23
20 SOIC, 28 DIP/SOIC
-40 to +85C
Key Features
n
Analog Function Block with 12-bit A/D including:
-- Analog comparator with seven input muxes
-- Constant Current Source and V
CC
/2 Reference
-- 16-bit capture timer (upcounter) clocked from CKI
with auto reset on timer startup
n
Quiet design (reduced radiated emissions)
n
4096 bytes on-board OTP EPROM with security feature
n
128 bytes on-board RAM
Additional Peripheral Features
n
Idle Timer
n
One 16-bit timer with two 16-bit registers supporting:
-- Processor Independent PWM mode
-- External Event counter mode
-- Input Capture mode
n
Multi-Input Wake-Up (MIWU) with optional interrupts
n
WATCHDOG and clock monitor logic
n
MICROWIRE/PLUS serial I/O with programmable shift
clock-polarity
I/O Features
n
Software selectable I/O options (Push-Pull Output, Weak
Pull-Up Input, High Impedance Input)
n
High current outputs
n
Schmitt Trigger inputs on ports G and L
n
Packages:
-- 28 DIP/SO with 23 I/O pins
-- 20 SO with 15 I/O pins
CPU/Instruction Set Features
n
2.5 s instruction cycle time
n
Eight multi-source vectored interrupt servicing:
-- External Interrupt
-- Idle Timer T0
-- Timer T1 associated Interrupts
-- MICROWIRE/PLUS
-- Multi-Input Wake Up
-- Software Trap
-- Default VIS
-- A/D (Capture Timer)
n
8-bit Stack Pointer (SP) -- stack in RAM
n
Two 8-bit Registers Indirect Data Memory Pointers
(B and X)
Fully Static CMOS
n
Two power saving modes: HALT and IDLE
n
Temperature ranges: 0C to +70C, -40C to +85C
n
Available with Crystal (-XE) or R/C (-RE) oscillator
Development System
n
Emulation device for COP8ACC5
n
Real time emulation and full program debug offered by
MetaLink
development system
Applications
n
Battery Chargers
n
Appliances
n
Data Acquisition systems
Driveway
TM
is a trademark of Aisys Intelligent Systems.
COP8
TM
, MICROWIRE
TM
, MICROWIRE/PLUS
TM
, and WATCHDOG
TM
are trademarks of National Semiconductor Corporation.
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
iceMASTER
is a registered trademark of MetaLink Corporation.
May 1999
COP8ACC7
8-Bit
CMOS
OTP
Microcontroller
with
16k
Memory
and
High
Resolution
A/D
1999 National Semiconductor Corporation
DS012869
www.national.com
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
CC
)
7V
Voltage at Any Pin
-0.3V to V
CC
+0.3V
Total Current into V
CC
Pin (Source)
100 mA
Total Current out of GND Pin (Sink)
110 mA
Storage Temperature Range
-65C to +140C
Note 1: Absolute maximum ratings indicate limits beyond which damage to
the device may occur. DC and AC electrical specifications are not ensured
when operating the device at absolute maximum ratings.
DC Electrical Characteristics
0C
T
A
+70C unless otherwise specified
Parameter
Conditions
Min
Typ
Max
Units
Operating Voltage
Peak-to-Peak
2.7
5.5
V
Power Supply Ripple (Note 2)
0.1 V
CC
V
Supply Current (Note 3)
CKI = 4 MHz
V
CC
= 5.5V, t
C
= 2.5 s
9.5
mA
CKI = 4 MHz
V
CC
= 4V, t
C
= 2.5 s
6.5
mA
CKI = 1 MHz
V
CC
= 4V, t
C
= 10 s
5.4
mA
HALT Current (Note 4)
V
CC
= 5.5V, CKI = 0 MHz
<
5
10
A
V
CC
= 4V, CKI = 0 MHz
<
3
6
A
IDLE Current
CKI = 4 MHz
V
CC
= 5.5V, t
C
= 2.5 s
1.5
mA
CKI = 1 MHz
V
CC
= 4V, t
C
= 10 s
0.5
mA
Input Levels (V
IH
, V
IL
)
RESET
Logic High
0.8 V
CC
V
Logic Low
0.2 V
CC
V
CKI, All Other Inputs
Logic High
0.7 V
CC
V
Logic Low
0.2 V
CC
V
Hi-Z Input Leakage
V
CC
= 5.5V
1
1
A
Input Pullup Current
V
CC
= 5.5V, V
IN
= 0V
-40
-250
A
G and L Port Input Hysteresis
(Note 6)
0.35 V
CC
V
Output Current Levels
D Outputs
Source
V
CC
= 4V, V
OH
= 3.3V
-0.4
mA
V
CC
= 2.7V, V
OH
= 1.8V
-0.2
mA
Sink
V
CC
= 4V, V
OL
= 1V
10
mA
V
CC
= 2.7V, V
OL
= 0.4V
2.0
mA
All Others
Source (Weak Pull-Up Mode)
V
CC
= 4V, V
OH
= 2.7V
-10
-110
A
V
CC
= 2.7V, V
OH
= 1.8V
-2.5
-33
A
Source (Push-Pull Mode)
V
CC
= 4V, V
OH
= 3.3V
-0.4
mA
V
CC
= 2.7V, V
OH
= 1.8V
-0.2
mA
Sink (Push-Pull Mode)
V
CC
= 4V, V
OL
= 0.4V
1.6
mA
V
CC
= 2.7V, V
OL
= 0.4V
0.7
mA
TRI-STATE
Leakage
V
CC
= 5.5V
1
1
A
Allowable Sink/Source
Current per Pin
D Outputs (Sink)
15
mA
All others
3
mA
Maximum Input Current
Room Temp
200
mA
without Latchup (Note 5)
RAM Retention Voltage, V
r
500 ns Rise and Fall Time (min)
2
V
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4
DC Electrical Characteristics
(Continued)
0C
T
A
+70C unless otherwise specified
Parameter
Conditions
Min
Typ
Max
Units
Input Capacitance
(Note 6)
7
pF
Load Capacitance on D2
(Note 6)
1000
pF
AC Electrical Characteristics
0C
T
A
+70C unless otherwise specified
Parameter
Conditions
Min
Typ
Max
Units
Instruction Cycle Time (Note 8)
Crystal, Resonator
2.7V
V
CC
4V
2.5
DC
s
4V
V
CC
5.5V
1.0
DC
s
R/C Oscillator
2.7V
V
CC
4V
7.5
DC
s
4V
V
CC
5.5V
3.0
DC
s
Inputs
t
SETUP
4V
V
CC
5.5V
200
ns
2.7V
V
CC
4V
500
ns
t
HOLD
4V
V
CC
5.5V
60
ns
2.7V
V
CC
4V
150
ns
Output Propagation Delay (Note 6)
R
L
= 2.2k, C
L
= 100 pF
t
PD1
, t
PD0
SO, SK
4V
V
CC
5.5V
0.7
s
2.7V
V
CC
4V
1.75
s
All Others
4V
V
CC
5.5V
1
s
2.7V
V
CC
4V
2.5
s
MICROWIRE
TM
Setup Time (t
UWS
) (Note 6)
V
CC
4V
20
ns
MICROWIRE Hold Time (t
UWH
) (Note 6)
V
CC
4V
56
ns
MICROWIRE Output Propagation Delay (t
UPD
)
V
CC
4V
220
ns
Input Pulse Width (Note 7)
Interrupt Input High Time
1
t
C
Interrupt Input Low Time
1
t
C
Timer 1, 2, 3 Input High Time
1
t
C
Timer 1, 2, 3 Input Low Time
1
t
C
Reset Pulse Width
1
s
Note 2: Maximum rate of voltage change must be
<
0.5V/ms.
Note 3: Supply current is measured after running 2000 cycles with a square wave CKI input, CKO open, inputs at rails and outputs open.
Note 4: The HALT mode will stop CKI from oscillating in the RC and the Crystal configurations. Measurement of I
DD
HALT is done with device neither sourcing or
sinking current; with L, C, and G0G5 programmed as low outputs and not driving a load; all outputs programmed low and not driving a load; all inputs tied to V
CC
;
clock monitor and comparator disabled. Parameter refers to HALT mode entered via setting bit 7 of the G Port data register. Part will pull up CKI during HALT in crystal
clock mode.
Note 5: Pins G6 and RESET are designed with a high voltage input network. These pins allow input voltages
>
V
CC
and the pins will have sink current to V
CC
when
biased at voltages
>
V
CC
(the pins do not have source current when biased at a voltage below V
CC
). The effective resistance to V
CC
is 750
(typical). These two
pins will not latch up. The voltage at the pins must be limited to less than 14V. WARNING: Voltages in excess of 14V will cause damage to the pins. This warning
excludes ESD transients.
Note 6: The output propagation delay is referenced to the end of the instruction cycle where the output change occurs.
Note 7: Parameter characterized but not tested.
Note 8: t
C
= Instruction Cycle Time.
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5
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