GMS81C50 Datasheet, PDF (15/99 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCONTROLLERS

GMS81C50 Series
6. PORT STRUCTURES
6.1 R0 Ports
Pin Name
Open drain Selection
Pull-up Selection
Circuit Type
R00 ~ R07
Data Register
Direction Register
Data Bus
Data Bus
Rd

Rd

MUX
HYUNDAI
@ RESET
VDD
VDD
Hi - Z
PAD
or
High-Input
(with pullup)
VSS
6.2 R1 Ports (R10, R11, R12, R13, R14)
Pin Name
R10
R11 / INT1
R12 / INT2
R13
R14 / EC
Open drain Selection
Pull-up Selection
Function Selection
Data Register
Direction Register
Data Bus
MUX
Circuit Type
to R11...INT1
to R12...INT2
to R14...EC
Rd
NOISE
FILTER
@ RESET
VDD
VDD
Hi - Z
PAD
or
High-Input
(with pullup)
VSS
12