HD6412350 Hitachi, HD6412350 Datasheet - Page 414

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

After a power-on reset and in hardware standby mode, PORTG contents are determined by the pin
states, as PGDDR and PGDR are initialized. PORTG retains its prior state after a manual reset,
and in software standby mode.
9.14.3
Port G pins also function as bus control signal output pins (CS0 to CS3, and CAS). The pin
functions are different in modes 1 and 2, modes 3 and 7, and modes 4 to 6. Port G pin functions
are shown in table 9-26.
Table 9-26 Port G Pin Functions
Pin
PG
PG
PG
Note: * Modes 2, 3, 6, and 7 only apply to the H8S/2351.
394
4
3
2
/CS0
/CS1
/CS2
Pin Functions
Selection Method and Pin Functions
The pin function is switched as shown below according to the operating mode
and bit PG4DDR.
The pin function is switched as shown below according to the operating mode
and bit PG3DDR.
The pin function is switched as shown below according to the operating mode
and bit PG2DDR.
Operating
Mode
PG4DDR
Pin function
Operating
Mode
PG3DDR
Pin function
Operating
Mode
PG2DDR
Pin function
PG
PG
PG
4
3
2
Modes 1, 2, 4, 5, 6*
input pin CS0 output pin PG
input pin PG
input pin PG
Modes 1, 2, 3, 7*
Modes 1, 2, 3, 7*
0
0
0
3
2
output pin PG
output pin PG
1
1
1
4
3
2
input pin PG
input pin CS1 output pin
input pin CS2 output pin
0
0
0
Modes 3 and 7*
Modes 4 to 6*
Modes 4 to 6*
4
output pin
1
1
1