UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 123

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) When the device is powered on, and when restoring from the STOP mode, sufficient time must be allowed for the oscillation
(3) The EXTC bit of the oscillation stabilization time specification register (OSTS) must be cleared (0). If the EXTC bit is set
to stabilize. Generally speaking, the time required for oscillation stabilization is several milliseconds when a crystal
resonator is used, and several hundred microseconds when a ceramic resonator is used.
An adequate oscillation stabilization period should be secured by the following means:
(1), oscillation will stop.
<1> When powering-on
<2> When returning from STOP mode :
(ii) Time of the oscillation stabilization timer that automatically starts at the valid edge of NMI, INTP4, or INTP5
(i) RESET input (reset period)
signal* (set by the oscillation stabilization time specification register (OSTS))
* For INTP4 and INTP5, when masking is released and macro service is disabled.
CHAPTER 4 CLOCK GENERATOR
: RESET input (reset period)
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