Chapter 2. Architecture
STOP Function
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, D8~D9 output and REMOUT output are
¡ È ¡ È
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.
3. Part other than WDT, D8~D9 output and REMOUT output have a value before
come into stop mode.
¡ È
But, the state of D0~D7 output in stop mode is able to choose as masked
¡ È ¡ È
output or same level before come into stop mode.
option.
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The function to release stop mode is able to choose each bit of K or R input.
¡ È ¡ È
Stop mode is released when one of K or R input is going to
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.
1. State of D0~D7 output and REMOUT output is return to state of before stop mode
is achieved.
¡ ¿
2. After 1024 8 enable clocks for stable oscillating. First instruction start to operate.
3. In return to normal operation, WDT is counted from zero again.
¡ È ¡ È
, stop
But, at executing stop instruction, if one of K or R input is chosen to
instruction is same to NOP instruction.
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Masked options
The GMS340 series offer the following optional features.
These options are masked.
1. Watch dog timer reset by REMOUT output signal.
2. Input terminals having STOP release mode : K0~K3, R0~R3.
3. I/O terminals having pull-up resistor : R0~R3
4. Ceramic oscillation circuit contained (or not contained).
[This option is not available for MHz Ceramic oscillator]
5. Output form at stop mode
¡ È ¡ È
or keep before stop mode
D0~D7 :
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6. Instruction cycle selection:
T=48/fOSC or T=6/fOSC
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HYNIX [ HYNIX SEMICONDUCTOR ]
