SANYO LC72321 Datasheet

Overview

The LC72321 is a single-chip microcontroller for use in
electronic tuning applications. It includes on chip both
LCD drivers and a PLL circuit that can operate at up to
150 MHz. It features a large-capacity ROM, a highly
efficient instruction set, and powerful hardware.

Functions

• Serial I/O

• Built-in timer interrupts: 80 µs, 1 ms, 2 ms and 5 ms

• Stack: Eight levels

• Beep control: Six beep tones (2.08, 2.25, 2.5, 3.0, 3.75,
and 4.17 kHz)

• Fast programmable divider

• General-purpose counters: HCTR for frequency
measurement and LCTR for frequency or period
measurement

• LCD driver for displays with up to 56 segments
(1/2 duty, 1/2 bias)

• Program memory (ROM): 16 bits × 4095

• Data memory (RAM): 4 bits × 256

• All instructions are single-word instructions

• Cycle time: 2.67 µs, 13.33 µs, or 40.00 µs (option)

• Unlock FF: 0.55 µs detection, 1.1 µs detection

• Timer FF: 1 ms, 5ms, 25ms, 125ms

• Input ports*: One dedicated key input port and one

high breakdown voltage port

• Output ports*:Two dedicated key output ports, one high

breakdown voltage open drain port
Two CMOS output ports (of which one
can be switched to be used as LCD driver
outputs)
Seven CMOS output ports (mask option
switchable to use as LCD ports)

• I/O ports*: One switchable between input and output

in four-bit units and one switchable
between input and output in one-bit units

Note: * Each port consists of four bits

• Program runaway can be detected and a special address
set. (Programmable watchdog timer)

• Voltage detection type reset circuit

• One 6-bit A/D converter

• Two 8-bit D/A converters (PWM)

• One external interrupt (The LC72321 provides an
external interrupt, and internal interrupt and a serial I/O
interrupt, one of which can be selected under program
control.)

• Hold mode for RAM backup

• Sense FF for hot/cold startup determination

• PLL: 4.5 to 5.5 V

• CPU: 3.5 to 5.5 V

• RAM: 1.3 to 5.5 V

Package Dimensions

unit: mm

3174-QIP80E

CMOS LSI

83194TH (OT) No. 4796-1/13

Preliminaly

SANYO: QIP80E

[LC72321]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Single-Chip Microcontroller with PLL

and LCD Driver

LC72321

Ordering number : EN4796A

No. 4796-2/13

LC72321

Pin Assignment

No. 4796-3/13

LC72321

Block Diagram

No. 4796-4/13

LC72321

Specifications

Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V

Note: * Reference value

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

DD

max –0.3 to +6.5 V

Input voltage

V

IN

1 HOLD, INT, RES, SNS, and the G port –0.3 to +13 V

V

IN

2 Inputs other than VIN1 –0.3 to VDD+ 0.3 V

Output voltage

V

OUT

1 H port –0.3 to +15 V

V

OUT

2 Outputs other than V

OUT

1 –0.3 to VDD+ 0.3 V

I

OUT

1 All D and H port pins 0 to 5 mA

Output current

I

OUT

2 All E and F port pins 0 to 3 mA

I

OUT

3 All B and C port pins 0 to 1 mA

I

OUT

4 S1 to S28 and all I port pins 0 to 1 mA
Allowable power dissipation Pd max Ta = –40 to +85°C 300* mW
Operating temperature range Topg –40 to +85 °C
Storage temperature range Tstg –45 to +125 °C

Parameter Symbol Conditions

Ratings

Unit

min typ max

V

DD

1 CPU and PLL operating 4.5 5.5 V

Supply voltage V

DD

2 CPU operating 3.5 5.5 V

V

DD

3 Memory retention voltage 1.3 5.5 V

V

IH

1 G port 0.7 V

DD

8.0 V

V

IH

2 RES, INT, HOLD 0.8 V

DD

8.0 V

Input high level voltage

V

IH

3 SNS 2.5 8.0 V

V

IH

4 A port 0.6 V

DD

V

DD

V

V

IH

5 PE0, PE2, F port 0.7 V

DD

V

DD

V

V

IH

6

LCTR (period measurement),

0.8 V

DD

V

DD

V

V

DD

1, PE1, PE3

V

IL

1 G port 0 0.3 V

DD

V

V

IL

2 RES, INT, PE1, PE3 0 0.2 V

DD

V

V

IL

3 SNS 0 1.3 V

Input low level voltage V

IL

4 A port 0 0.2 V

DD

V

V

IL

5 PE0, PE2, F port 0 0.3 V

DD

V

V

IL

6 LCTR (period measurement), VDD1 0 0.2 V

DD

V

V

IL

7 HOLD 0 0.4 V

DD

V

f

IN

1 XIN 4.0 4.5 5.0 MHz

f

IN

2 FMIN, VIN2, VDD1 10 130 MHz

f

IN

3 FMIN, VIN3, VDD1 10 150 MHz

Input frequency

f

IN

4 AMIN (L), VIN4, VDD1 0.5 10 MHz

f

IN

5 AMIN (H), VIN5, VDD1 2.0 40 MHz

f

IN

6 HCTR, VIN6, VDD1 0.4 12 MHz

f

IN

7 LCTR (frequency), VIN7, VDD1 100 500 kHz

f

IN

8 LCTR (period), VIH6, VIL6, VDD1 1 20 × 10

3

Hz

V

IN

1 XIN 0.50 1.5 Vrms

V

IN

2 FMIN 0.10 1.5 Vrms

Input amplitude V

IN

3 FMIN 0.15 1.5 Vrms

V

IN

4, 5 AMIN 0.10 1.5 Vrms

V

IN

6, 7 LCTR, HCTR 0.10 1.5 Vrms

Input voltage range V

IN

8 ADI 0 V

DD

V

Allowable Operating Ranges at Ta = –40 to +85°C, VDD= 3.5 to 5.5 V