Operation Of Standby Function; Halt Mode - NEC mPD789026 Subseries User Manual

11.2 Operation of Standby Function

11.2.1 HALT mode

(1) HALT mode
HALT mode is set by executing the HALT instruction.
The operation status in the HALT mode is shown in the following table.
Item
Clock generation circuit
CPU
Port (Output latch)
16-bit timer
8-bit timer/event counter
Watchdog timer
Serial interface
External interrupt
Key return
CHAPTER 11 STANDBY FUNCTION
Table 11-1. HALT Mode Operating Status
HALT Mode Operating Status
System clock oscillation enabled
Clock supply to CPU stopped
Operation stopped
Retains the status before setting the HALT mode
Operation enabled
Operation enabled
Operation enabled
Operation enabled
Operation enabled
Only the pin set to key return mode is enabled
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