SH7709S Datasheet, PDF (618/807 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

18.3.5 Port E Control Register (PECR)
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PE7 PE7 PE6 PE6 PE5 PE5 PE4 PE4 PE3 PE3 PE2 PE2 PE1 PE1 PE0 PE0
MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0
Initial value: 1/0 0 1 0 1 0 1 0 1 0 1 0 1 0 1/0 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 E control register (PECR) is a 16-bit readable/writable register that selects the pin
functions. PECR is initialized to H'AAAA (ASEMD0 = 1) or H'2AA8 (ASEMD0 = 0) by a
power-on reset, but is not initialized by a manual reset, in software standby mode, or in sleep
mode.
Bits 15 and 14—PE7 Mode 1 and 0 (PE7MD1, PE7MD0)
Bits 13 and 12—PE6 Mode 1 and 0 (PE6MD1, PE6MD0)
Bits 11 and 10—PE5 Mode 1 and 0 (PE5MD1, PE5MD0)
Bits 9 and 8—PE4 Mode 1 and 0 (PE4MD1, PE4MD0)
Bits 7 and 6—PE3 Mode 1 and 0 (PE3MD1, PE3MD0)
Bits 5 and 4—PE2 Mode 1 and 0 (PE2MD1, PE2MD0)
Bits 3 and 2—PE1 Mode 1 and 0 (PE1MD1, PE1MD0)
Bits 1 and 0—PE0 Mode 1 and 0 (PE0MD1, PE0MD0)
These bits select the pin functions and perform input pull-up MOS control.
Bit (2n + 1)
PEnMD1
0
0
1
1
Bit 2n
PEnMD0
0
1
0
1
Pin Function
Reserved (n = 0, 7) (see table 18.1)
Port output
Port input (Pull-up MOS: on)
Port input (Pull-up MOS: off)
(Initial value) (ASEMD0 = 0)
(Initial value) (ASEMD0 = 1)
(n = 0, 7)
Bit (2n + 1)
PEnMD1
0
0
1
1
Bit 2n
PEnMD0
0
1
0
1
Pin Function
Other function (n = 2, 4, 5) (see table 18.1), Reserved (n = 1, 3, 6)
Port output
Port input (Pull-up MOS: on)
(Initial value)
Port input (Pull-up MOS: off)
(n = 1 to 6)
Rev. 5.00, 09/03, page 574 of 760