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Pin Equivalent I/O Circuit
Pin
Port A
Port B
Port C
PA0 to PA5
PB0 to PB7
PC0 to PC7
Data bus
22 lines
Port A
PA6/VSYNC
PA7/HSYNC
Data bus
2 lines
Port D
PD0/INT2
PD3/SI
PD4/HS0
PD5/HS1
PD6/RMC
Data bus
PD7/EC
INT2, SI, HS0, HS1, RMC, EC
6 lines
Circuit format
Port A data
Port B data
Port C data
Port A direction
Port B direction
Port C direction
RD
(Port A, B, C)
Port A data
Port A direction
RD (Port A)
VSYNC
HSYNC
Port D data
Port D direction
RD (Port D)
– 6 –
IP
IP
Schmitt input
Input multiplexer
IP
Schmitt input
CXP854P60
When reset
Hi-Z
Input protection
circuit
Input protection
Hi-Z
circuit
Large current
source 12mA
Hi-Z
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