Ordering number : ENN6171

31000RM (OT) No. 6171-1/13

Overview

The LC72344W and LC72345W are low-voltage
electronic tuning microcontrollers that include a DC-DC
converter, a PLL that operates up to 230 MHz, a 1/4 duty
1/2 bias LCD driver and other functions on chip. The
built-in DC-DC converter provided by these ICs can easily
implement a tuning system voltage generator circuit, and
furthermore, since the transistor required for the low-pass
filter is built in, these ICs can contribute to further end
product cost reductions. Additionally, the DC-DC
converter output voltage can be provided to other external
ICs, making these products optimal for low-voltage
portable audio equipment that includes a radio receiver.

Functions

· Program memory (ROM): 3072

16 bits (6 KB)

LC72344W
4096

16 bits (8 KB)

LC72345W

· Data memory (RAM): 192

4 bits LC72344W

256

4 bits LC72345W

· Cycle time: 40 µs (all 1-word instructions)
· Stack: 8 levels
· LCD driver: 48 to 76 segments (1/4 duty, 1/2 bias drive)
· Interrupts: One external interrupt

Timer interrupts (1, 5, 10, and 50 ms)

· A/D converter: Two input channels (5-bit successive

approximation conversion)

· Input ports: 6 ports (of which 2 can be switched for use

as A/D converter inputs)

· Output ports: 6 ports (of which 1 can be switched for use

as the beep tone output and 2 are open-
drain ports)

· I/O ports: 16 ports (of which 8 can be switched for use

as LCD ports as mask options)

(Continued on next page.)

LC72344W, 72345W

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Low-Voltage ETR Controller with On-Chip DC-DC

Converter

CMOS IC

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

Package Dimensions

unit: mm

3190-SQFP64

10.0

12.0

1.25

0.5

1.25

0.5

1.25

0.18

12.0

10.0

0.5

1.7max

0.5

0.1

0.15

SANYO: SQFP64

[LC72344W, 72345W]

(Continued from preceding page.)

· PLL: Supports dead band control (two types)

Reference frequencies: 1, 3, 5, 6.25, 12.5, and 25 kHz

· Input frequencies: FM band: 10 to 230 MHz

AM band: 0.5 to 10 MHz

· Input sensitivity: FM band: 35 mV rms (50 mV rms at

130 MHz or higher frequency)
AM band: 35 mV rms

· External reset input: During CPU and PLL operation,

instruction execution is started
from location 0.

· Built-in power-on reset circuit:

The CPU starts executing from location 0 when power
is first applied.

· Static power-on function: Backup state clear function

using the BATT pin.

· Halt mode: The controller operating clock is stopped.
· Backup mode: The crystal oscillator is stopped.
· Beep tone: 1.5 and 3.1 kHz
· Built-in DC-DC converter: Two systems (One system

can be used as an external circuit power supply by
providing an external transistor.)

· Built-in low-pass filter amplifier: An external low-pass

filter amplifier circuit is no longer required in end
products.

· Remaining power check function: The battery voltage

can be directly converted to a digital value by the A/D
converter.

· Memory retention voltage: 0.9 V or higher.
· V

voltage: 0.9 to 1.8 V

· Package: SQFP-64 (0.5 mm lead pitch)

No. 6171-2/13

LC72344W, 72345W

LC72344W
LC72345W

XIN

TEST1

AGND

AOUT

AIN

VSS

AMIN

FMIN

VDD

BRES

COM1

COM3

COM2

COM4

XOUT

TEST2

PA3

PA2

PA1

PA0

PB3

PB2

PB1

PB0

PC3

PD3

PC2

PC1

PC0

PD2

PD1

PG2/S18

S12/PH0

S11

S10

S13/PH1

S15/PH3

S14/PH2

S17/PG1

(Top view)

S16/PG0

PE1

INT/PD0

BEEP/PE0

BATT

ADI0/PF0

ADI1/PF1

VDC1

VDC3

VSS

VDC2

VREF

VCON

VADJ

PG3/S19

Pin Assignment

No. 6171-3/13

LC72344W, 72345W

Parameter

Symbol

Conditions

Ratings

Unit

(1)max

VDD

0.3 to +0.3

Maximum supply voltage

(2)max

VDC1

0.3 to +4.0

(3)max

VDC2

0.3 to +4.0

(4)max

VDC3

0.3 to +4.0

Input voltage

(1)

PF, FMIN, AMIN, AIN, BATT, and BRES

0.3 to V

(3) to +0.3

(2)

PA, PC, PD, PG, and PH

0.3 to V

(1) to +0.3

OUT

(1)

AOUT, and PE

0.3 to +15

Output voltage

OUT

(2)

PB, PC, PD, PG, and PH

0.3 to V

(1) +0.3

OUT

(3)

VREF, and EO

0.3 to V

(3) +0.3

OUT

(4)

COM1 to COM4, S1 to S19

0.3 to V

(4) +0.3

OUT

(1)

PC, PD, PG, PH, and EO

0 to 3

OUT

(2)

0 to 1

Output current

OUT

(3)

AOUT, and PE

0 to 2

OUT

(4)

S1 to S20

300

µA

OUT

(5)

COM1 to COM4

Allowable power dissipation

Pdmax

Ta = 20 to +70°C

200

Operating temperature

Topr

20 to +70

°C

Storage temperature

Tstg

45 to +125

°C

Specifications

Absolute Maximum Ratings

at Ta = 25°C, V

= 0 V

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

(1)

The voltage applied to the VDD pin

0.9

1.5

1.8

(2)

The voltage applied to the VDC1 pin

0.9

1.5

1.8

Supply voltage

(3)

The voltage applied to the VDC2 pin

1.8

2.1

2.4

(4)

The voltage applied to the VDC3 pin

2.6

3.0

3.4

(5)

Memory retention voltage

0.9

(1)

Ports PC, PD, PG, and PH

0.7 V

(1)

Input high-level voltage

(2)

Port PA

0.8 V

(1)

(3)

Port PF

0.8 V

(1)

(3)

(4)

Ports BRES and BATT

0.6 V

(1)

(3)

(1)

Ports PC, PD, PG, and PH

0.3 V

(1)

Input low-level voltage

(2)

Port PA

0.2 V

(1)

(3)

Port PF

0.2 V

(1)

(4)

Ports BRES and BATT

0.2 V

(1)

XIN

0.5

0.6

Vrms

Input amplitude

(2)

FMIN, AMIN: V

(3) = 2.1 V

0.035

0.35

Vrms

(3)

FMIN:

(3) = 2.1 V

0.05

0.35

Vrms

Input voltage range

(4)

ADI0, ADI1, and V

(4)

(1)

XIN:

35 k

kHz

Input frequency

(2)

FMIN: V

(2), V

(3) = 2.1 V

130

MHz

(3)

FMIN: V

(3), V

(3) = 2.1 V

130

230

MHz

(4)

AMIN(L): V

(2), V

(3) = 2.1 V

0.5

MHz

Allowable Operating Ranges

at Ta = 20 to +70°C, V

= 0.9 to 1.8 V

No. 6171-4/13

LC72344W, 72345W

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

(1)

XIN: V

(1) = 1.8 V, V

(2) = 1.8 V, V

(3) = 2.1 V

µA

(2)

FMIN, and AMIN: V

(3) = 2.1 V

µA

Input high-level voltage

(3)

Ports BRES, BATT, and PF: V

(3) = 2.1 V

µA

(4)

Ports PA (no pull-down resistor), PC, PD, PG, and PH:

µA

(1) = 1.8 V

(1)

XIN: V

(1) = V

(2) = V

(3) = V

µA

(2)

FMIN, and AMIN: V

(3) = V

µA

Input low-level voltage

(3)

Ports BRES, BATT, and PF: V

(3) = V

µA

(4)

Ports PA (no pull-down resistor), PC, PD, PG, and PH:

µA

(1) = V

Input floating voltage

Port PA pull-down resistor present

0.05 V

(1)

Pull-down resistor

(1)

Port PA pull-down resistor: V

(1) = 1.3 V

100

200

(2)

TEST1 and TEST2 pull-down resistors

Hysteresis

BRES

0.1 V

(3)

0.2 V

(3)

(1)

PB: I

= 1 mA

(1)

0.7 V

(1)

0.3 V

(1)

(2)

PC, PD, PG, PH: I

= 1 mA

(1)

0.3 V

(1)

(3)

EO: I

= 500 µA

(3)

Output high-level voltage

0.3 V

(3)

(4)

XOUT I

= 1 µA

(3)

0.3 V

(3)

(5)

S1 to S20: I

= 20 µA

(4) 1

(6)

COM1, CM2, COM3, and COM4: I

= 100 µA

(4) 1

(7)

VREF: I

= 1 mA

(3) 1

(1)

PB: I

= 50 µA

0.3 V

(1)

0.7 V

(1)

(2)

PC, PD, PG, and PH: I

= 1 mA

0.3 V

(1)

(3)

EO: I

= 500 µA

0.3 V

(3)

Output low-level voltage

(4)

XOUT: I

= 1 µA

0.3 V

(3)

(5)

S1 to S20: I

= 20 µA

(4)2

(6)

COM1, COM2, COM3, and COM4: I

= 100 µA

(4)2

(7)

PE: I

= 2 mA

0.6 V

(1)

(8)

AOUT: I

= 1 mA, AIN = 1.3 V: V

(4) = 3 V

0.5

Output off leakage current

OFF

(1)

PB, PC, PD, PG, PH, and E0 ports

µA

OFF

(2)

AOUT and PE ports

100

A/D converter error

ADI0 and ADI1, V

1/2

+1/2

LSB

Internal clock frequency

fosc(1)

FM, and PLLSTOP: V

(3) = 2.1 V, Vcon = OPEN

300

600

900

kHz

fosc(2)

450

1200

kHz

DD1

(1)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

(2) 130 MHz, Ta = 25°C

DD2

(2)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

(2) 130 MHz, Ta = 25°C

DD3

(3)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

(2) 130 MHz, Ta = 25°C

DD1

(4)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

0.1

Halt mode, Ta = 25°C

Current drain

DD2

(5)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

0.3

Halt mode, Ta = 25°C

DD3

(6)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

0.1

Halt mode, Ta = 25°C

DD1

(7)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

100

With the oscillator stopped, Ta = 25°C

DD2

(8)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

500

With the oscillator stopped, Ta = 25°C

DD3

(9)

(1) = 1.5 V, V

(3) = 2.1 V, V

(4) = 3.0 V:

100

With the oscillator stopped, Ta = 25°C

Electrical Characteristics

under allowable operating conditions

The halt mode current drain is due to 20 instructions being executed every 125 ms.

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: LC72345W

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: LC72345W