UPD75304BGC View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD75304BGC

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75304B,75306B,75308B

FUNCTION OUTLINE (1/2)

Item

Function

Number of basic instructions 41

Instruction cycle

0.95 µs, 1.91 µs, 15.3 µs (main system clock: 4.19 MHz operation)

122 µs (subsystem clock: 32.768 kHz operation)

On-chip memory

ROM

RAM

General register

Accumulators

Instruction set

8064 × 8 bits (µPD75308B), 6016× 8 bits (µPD75306B), 4096× 8 bits (µPD75304B)

512 × 4 bits

• 4-bit manipulation: 8 (B, C, D, E, H, L, X, A)

• 8-bit manipulation: 4 (BC, DE, HL, XA)

• Bit accumulator (CY)

• 4-bit accumulator (A)

• 8-bit accumulator (XA)

• Various bit manipulation instructions

• Efficient 4-bit data manipulation instructions

• 8-bit data transfer instructions

• GETI instruction that can implement arbitrary 2-byte/3-byte instructions with 1

byte

I/O lines

LCD controller/driver

Supply voltage range

Timer

8 CMOS input

Pull-up by software possible : 23

16 CMOS input/output

40

8 CMOS output

Used with segment pin

N-ch open-drain

8

input/output

10 V withstand voltage, pull-up by mask option

possible : 8

• Number of segments selection: 24/28/32 segments (4/8 can be switched at bit

port output.)

• Display mode selection: Static, 1/2 duty, 1/3 duty (1/2 bias), 1/3 duty (1/3 bias),

1/4 duty

• LCD drive division resistor can be incorporated by mask option

VDD = 2.0 to 6.0 V

3 channels

• 8-bit timer/event counter

• Clock source: 4 stages

• Event count possible

• 8-bit basic interval timer

• Standard clock generation: 1.95 ms, 7.82 ms, 31.3 ms, 250 ms

(4.19 MHz operation)

• Watchdog timer application possible

3

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