HD64F2149 Datasheet, PDF (267/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Pin
P81/GA20/CS2
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
bit HI12E in SYSCR2, bit CS2E in SYSCR, bit FGA20E in HICR, bit FGA20E
in HICR0, and bit P81DDR.
Note: * When bit FGA20E is set to 1 in HICR0, bits HI12E and P81DDR should
be cleared to 0.
FGA20E
(LPC)
0
1
HI12E
0
1
—*
FGA20E
—
0
(XBS)
1
—
CS2E
—
0
1
—
—
P81DDR
0
1
0
1
—
0
1
—
Pin function P81 P81 P81 P81 CS2
input output input output input
pin pin pin pin pin
P81 GA20 GA20
input output output
pin pin pin
GA20 input pin
The GA20 output pin and CS2 input pin can only be used in mode 2 or 3
(EXPE = 0).
P80/HA0/PME
The pin function is switched as shown below according to the combination of
bit HI12E in SYSCR2, bit PMEE in HICR0, and bit P80DDR.
Note: * When bit PMEE is set to 1 in HICR0, bits HI12E and P80DDR should
be cleared to 0.
PMEE
0
1
HI12E
0
1
—*
P80DDR
0
1
—
—*
Pin function P80 input pin P80 output pin HA0 input pin PME output pin
PME input pin
The HA0 input pin can only be used in mode 2 or 3 (EXPE = 0).
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