UPD75206CW NEC [NEC], UPD75206CW Datasheet - Page 16

• Manufacturer Part Number: UPD75206CW
• Description: 4-BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC [NEC]

16
5.3
* Instruction execution
The basic interval timer has the following functions:
SET1*
BASIC INTERVAL TIMER
From Clock
Generator
f
f
f
f
XX
XX
XX
XX
BTM3
/2
/2
/2
/2
Interval timer operation to generate reference time
Watchdog timer application to detect inadvertent program loop
Wait time select and count upon standby mode release
Count contents read
12
5
7
9
BTM2
4
BTM1
MPX
3
BTM0 BTM
Fig. 5-2 Basic Interval Timer Configuration
Internal Bus
(8-Bit Frequency Divider)
Basic Interval Timer
8
Clear
BT
Wait Release
Signal during
Standby Release
Set
BT Interrupt
Request Flag
IRQBT
Clear
PD75206
Vectored
Interrupt
Request
Signal