UPD178004A datasheet(17/56 Pages) NEC

Part #	UPD178004A

Description	8-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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17

µPD178004A, 178006A, 178016A, 178018A

Figure 5-3. 8-Bit Timer/Event Counter Block Diagram

Internal Bus

8-Bit Compare

Register (CR10)

8-Bit Timer

Register 1 (TM1)

Clear

Match

Selector

INTTM1

INTTM2

Clear

Match

Selector

8-Bit Compare

Register (CR20)

8-Bit Timer

Register 2 (TM2)

Internal Bus

fxx/2 to fxx/2

fx/2

9

11

TI1/P33

fxx/2 to fxx/2

fx/2

9

11

TI2/P34

Figure 5-4. 8-Bit Timer (D/A Converter) Block Diagram

4.5 MHz

Clock

Generation

Block

fPWM

Clear

Circuit

Comparator

PWM Data Register 2 Note

(PWMR2)

PWM Data Register 1

(PWMR1)

PWM Data Register 0

(PWMR0)

INTPWM

Internal Bus

PWM Duty Setting Block

PWM Mode

Select Register

P132/PWM0

P133/PWM1

P134/PWM2

b8

b0

PWM Control Register

PWM

BIT

PWM

CK0

PWM

MD

PWM

ST

PWM

RES

PWM

2SE

PWM

1SE

PWM

0SE

Output Select

Block

Output Select

Block

Output Select

Block

9-Bit Binary Counter

Internal Bus

Note

The PWM data register 2 (PWMR2) is multiplexed with the PWM timer register (PWMTMR).

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UPD178004A Datasheet(PDF) 17 Page - NEC

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