upd64a Renesas Electronics Corporation., upd64a Datasheet - Page 25

• Manufacturer Part Number: upd64a
• Description: 4-bit Single-chip Microcontroller For Infrared Remote Control Transmission
• Manufacturer: Renesas Electronics Corporation.

5.3 Standby Mode Release Timing
(1) STOP mode release timing
Caution When a release condition is established in the STOP mode, the device is released from the STOP
(2) HALT mode release timing
mode, and goes into a wait state. At this time, if the release condition is not held, the device
goes into STOP mode again after the wait time has elapsed. Therefore, when releasing the STOP
mode, it is necessary to hold the release condition longer than the wait time.
Standby
release signal
Clock
Standby
release signal
Clock
Figure 5-1. STOP Mode Release by Release Condition
Figure 5-2. HALT Mode Release by Release Condition
Oscillation
Operating
mode
Operating
HALT instruction
mode
(STOP mode)
HALT instruction
(HALT mode)
Data Sheet U14380EJ3V0DS00
STOP mode
Oscillation
HALT mode
stopped
Oscillation
HALT mode
(52/f
Wait
X
Operating mode
+ )
Oscillation
: Oscillation growth time
Operating
mode
PD64A, 65
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