upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 180

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

180
(2) HALT mode release
The HALT mode can be released by the following two sources.
(a) Release by unmasked interrupt request
When an unmasked interrupt request is generated, the HALT mode is released. If interrupt
acknowledgement is enabled, vectored interrupt servicing is carried out. If interrupt acknowledgement is
disabled, the next address instruction is executed.
Remarks 1. The broken lines indicate the case when the interrupt request which has released the
Status of CPU
release signal
System clock
oscillation
Standby
2. The wait time is as follows:
Figure 11-2. HALT Mode Release by Interrupt Request Generation
standby mode is acknowledged.
• When vectored interrupt servicing is carried out: 11 to 13 clocks
• When vectored interrupt servicing is not carried out: 3 to 5 clocks
Operating mode
instruction
HALT
CHAPTER 11 STANDBY FUNCTION
User’s Manual U16994EJ3V0UD
HALT mode
Interrupt
request
Oscillation
Wait
Wait
Operating mode