SD6830P AUK [AUK corp], SD6830P Datasheet - Page 10

• Manufacturer Part Number: SD6830P
• Description: 4BIT MICROCONTROLLER
• Manufacturer: AUK [AUK corp]

SD6830
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.
KSI-W002-000
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