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Rev. 1.00, 05/04, page 145 of 544
• PG3, PG2, PG1, PG0
The pin function is switched as shown below according to the state of the PGnDDR bit.
PGnDDR 0 1
Pin Function PGn input pin PGn output pin
[Legend]
n = 3 to 0
7.14.5 Port G Nch-OD Control Register (PGNOCR)
PGNOCR specifies the output driver type for pins on port G which are configured as outputs on a
bit-by-bit basis.
Bit Bit Name
Initial
Value R/W Description
7 PG7NOCR 0 R/W
6 PG6NOCR 0 R/W
5 PG5NOCR 0 R/W
4 PG4NOCR 0 R/W
3 PG3NOCR 0 R/W
2 PG2NOCR 0 R/W
1 PG1NOCR 0 R/W
0 PG0NOCR 0 R/W
0: NMOS push-pull (Vcc-side n-channel driver enabled)
1: Vss-side N-channel open drain (Vcc-side N-channel
driver disabled)
7.14.6 Pin Functions
DDR 0 1
NOCR — 0 1
ODR 0 1 0 1 0 1
V
ss
-side N-ch. driver OFF ON OFF ON OFF
V
cc
-side N-ch. driver OFF OFF ON OFF
Pin function Input pin Output pin*
Note: * Except when set as IIC I/O pin.