SH7709S Datasheet, PDF (614/807 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

18.3 Register Descriptions
18.3.1 Port A Control Register (PACR)
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PA7 PA7 PA6 PA6 PA5 PA5 PA4 PA4 PA3 PA3 PA2 PA2 PA1 PA1 PA0 PA0
MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0
Initial value: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
The port A control register (PACR) is a 16-bit readable/writable register that selects the pin
functions. PACR is initialized to H'0000 by a power-on reset, but is not initialized by a manual
reset, in standby mode, or in sleep mode.
Bits 15 and 14—PA7 Mode 1 and 0 (PA7MD1, PA7MD0)
Bits 13 and 12—PA6 Mode 1 and 0 (PA6MD1, PA6MD0)
Bits 11 and 10—PA5 Mode 1 and 0 (PA5MD1, PA5MD0)
Bits 9 and 8—PA4 Mode 1 and 0 (PA4MD1, PA4MD0)
Bits 7 and 6—PA3 Mode 1 and 0 (PA3MD1, PA3MD0)
Bits 5 and 4—PA2 Mode 1 and 0 (PA2MD1, PA2MD0)
Bits 3 and 2—PA1 Mode 1 and 0 (PA1MD1, PA1MD0)
Bits 1 and 0—PA0 Mode 1 and 0 (PA0MD1, PA0MD0)
These bits select the pin functions and perform input pull-up MOS control.
Bit (2n + 1)
PAnMD1
0
0
1
1
Bit 2n
PAnMD0
0
1
0
1
Pin Function
Other function (see table 18.1)
Port output
Port input (Pull-up MOS: on)
Port input (Pull-up MOS: off)
(Initial value)
(n = 0 to 7)
Rev. 5.00, 09/03, page 570 of 760