GMS36 Datasheet, PDF (81/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 7. GMS36XXXT
STOP Operation
Stop mode can be achieved by STOP instructions.
In stop mode :
1. Oscillator is stopped, the operating current is low.
2. Watch dog timer is reset, D0~D3 output is "L"and REMOUT output is "H" (Output
Tr. is off.)
3. Part other than WDT, D0~D3 output and REMOUT output have a value before
come into stop mode.
Stop mode is released when one of K or R input is going to "L".
1. State of D0~D3 output and REMOUT output is return to state of before stop mode
is achieved.
Ø 2. After 2¹⁰ System clock time for stable oscillating, first instruction start to operate.
3. In return to normal operation, WDT is counted from zero again.
But, at executing stop instruction, if one of K or R input is chosen to "L", stop instruction
is same to NOP instruction.
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