MC68HC812A4 Datasheet, PDF (131/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

Memory Expansion and Chip-Select
Memory Expansion Registers
8.5.3 Port F Data Direction Register
Address: $0032
Bit 7
6
5
4
3
2
1
Read: 0
Write:
DDRF6 DDRF5 DDRF4 DDRF3 DDRF2 DDRF1
Reset: 0
0
0
0
0
0
0
= Unimplemented
Figure 8-9. Port F Data Direction Register (DDRF)
Read: Anytime
Write: Anytime
Bit 0
DDRF0
0
When port F is active, DDRF determines pin direction.
1 = Associated bit is an output.
0 = Associated bit is an input.
8.5.4 Port G Data Direction Register
Address: $0033
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
Write:
0
DDRG5 DDRG4 DDRG3 DDRG2 DDRG1 DDRG0
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 8-10. Port G Data Direction Register (DDRG)
Read: Anytime
Write: Anytime
When port G is active, DDRG determines pin direction.
1 = Associated bit is an output.
0 = Associated bit is an input.
Advance Information
MOTOROLA
Memory Expansion and Chip-Select
MC68HC812A4 — Rev. 3.0
131