參數(shù)資料
型號(hào)： SD6830P
廠商： AUK Corp
英文描述： 4BIT MICROCONTROLLER
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 10/34頁(yè)
文件大?。?/td> 122K
代理商： SD6830P
KSI-W002-000
10
6.9 I /O Ports
Port C/ REM
Port C/REM is a 1-bit output port, which is related with the bit 3 of accumulator, with CMOS
N-channel open drain, which have large current sink capability, for I.R.LED drive.
This output can be configured as carrier frequency by programming the register Z and port
C data. This pin is put into the high-impedance state in stop mode.
Port D
Port D is a 4-bit input port with pull-up resistor. Forcing any input pins to “L” state, system
reset occurs and it starts to operate from the reset address.
Port E
Port E is a 4-bit input port with pull-up resistor. Forcing any input pins to
reset occurs and it starts to operate from the reset address.
Port F
Port F is an 8-bit output port with N-channel open drain. Each output which specified
by the
lower 3-bit of register L can be set and reset individually. All F pins are put into the low
state in stop mode.
Port G
Port G is a 1-bit output port with N-channel open drain. When stop mode is specified, this
pin still remains in the previous state. Set this pin to appropriate state before entering
stop mode for visible LED or key scan application.
Port K
Port K is a 1-bit output port with N-channel open drain. When stop mode is specified, this
pin still remains in the previous state. Set this pin to appropriate state before entering stop
mode for visible LED or key scan application.
SD6830
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