upd75212a Renesas Electronics Corporation., upd75212a Datasheet - Page 19

• Manufacturer Part Number: upd75212a
• Description: 4-bit Single-chip Microcomputer
• Manufacturer: Renesas Electronics Corporation.

5.3
* Instruction execution
SET1*
The basic interval timer has the following functions:
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
BASIC INTERVAL TIMER
From Clock
Generator
f
f
f
f
XX
XX
XX
XX
BTM3
/2
/2
/2
/2
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
PD75212A
Vectored
Interrupt
Request
Signal
19