UPD178016AGC View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD178016AGC

8-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD178004A, 178006A, 178016A, 178018A

Figure 5-5. Watchdog Timer Block Diagram

f xx

23

Prescaler

f xx

f xx

f xx

f xx

f xx

f xx

f xx

24

25

26

27

28

29

2 11

Selector

8-Bit Counter

Control

Circuit

INTWDT

Maskable

Interrupt Request

Reset

INTWDT

Non-Maskable

Interrupt Request

5.4 BUZZER OUTPUT CONTROL CIRCUIT

The clock with the following frequency can be output as a buzzer output.

• 1.5 kHz/3 kHz/6 kHz (@ 4.5-MHz crystal oscillator with system clock)

Figure 5-6. Buzzer Output Control Circuit Block Diagram

1.5 kHz

3 kHz

6 kHz

3

BEEP/ P36

TCL27 TCL26 TCL25

Timer Clock Select Register 2

P36

Output Latch

Internal Bus

PM36

Port Mode Register 3

18

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