HD404669 Datasheet, PDF (32/142 Pages) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

HD404669 Series
Table 12 Operations in Low-Power Dissipation Modes
Function
Stop Mode
Watch Mode
Standby Mode
Subactive Mode^*2
CPU
Reset
Retained
Retained
Operation
RAM
Retained
Retained
Retained
Operation
Timer A
Reset
Operation
Operation
Operation
Timer C
Reset
Stopped
Operation
Operation
Timer D
Reset
Stopped
Operation
Operation
Serial interface 1 Reset
Stopped ^*1
Operation
Operation
DTMF
Reset
Reset
Operation
Reset
Comparator
Reset
Stopped
Stopped
Operation
I/O
Reset
Retained
Retained
Operation
(high-
impedance)
Notes: 1. When a clock is input in external clock mode, transmit/receive operations are performed, but
interrupt operations are halted.
2. Subactive mode is a function option, and should be specified in the function option list.
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