參數(shù)資料
型號(hào)： UPD75402AC
廠商： NEC Corp.
英文描述： 4 BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機(jī)
文件頁數(shù)： 22/48頁
文件大?。?/td> 515K
代理商： UPD75402AC
22
μ
PD75402A(A)
7. STANDBY FUNCTION
To reduce the power consumption when the program is in the wait state, the
μ
PD75402A(A) has two standby
modes, STOP and HALT.
Table 7-1 Operation Statuses in the Standby Mode
Instruction to be used to
set mode
Clock generator
Basic interval
timer
Serial interface
Clock output
circuit
External
interrupt
CPU
Release signal
HALT mode
HALT instruction
Only the CPU clock (
Φ
) stops, but
oscillation continues.
Operates. (IRQBT is set at every refer-
ence time interval.)
Operable
Clocks other than CPU clock (
Φ
) can be
output.
INT2 pin is usable.
INT0 pin cannot be used.
RESET input or interrupt request signals
enabled by the interrupt enable flags
STOP mode
STOP instruction
Oscillation of the system clock stops.
Operation stops.
Operable only when the external SCK
input is selected for the serial clock.
Operation stops.
INT2 pin is usable.
INT0 pin cannot be used.
Operation stops.
RESET input
Opera-
tion
status
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