SH7727 Datasheet, PDF (903/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 26 Pin Function Controller (PFC)
26.3.5 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
Port E Control Register (PECR) is a 16-bit read/write register that selects the pin functions. PECR
is initialized to H'AAAA (ASEMD0 = 1) or H'2AA8 (ASEMD0 = 0) by power-on resets;
however, it is not initialized by manual resets, in software standby mode, or in sleep mode.
Bits 15, 14: PE7 Mode 1, 0 (PE7MD1, PE7MD0)
Bits 13, 12: PE6 Mode 1, 0 (PE6MD1, PE6MD0)
Bits 11, 10: PE5 Mode 1, 0 (PE5MD1, PE5MD0)
Bits 9, 8: PE4 Mode 1, 0 (PE4MD1, PE4MD0)
Bits 7, 6: PE3 Mode 1, 0 (PE3MD1, PE3MD0)
Bits 5, 4: PE2 Mode 1, 0 (PE2MD1, PE2MD0)
Bits 3, 2: PE1 Mode 1, 0 (PE1MD1, PE1MD0)
Bits 1, 0: PE0 Mode 1, 0 (PE0MD1, PE0MD0)
These bits select the pin functions and the input pullup MOS control.
Bit (2n + 1) Bit 2n
PEnMD1
PEnMD0
Pin Function
0
0
Reserved (n = 0, 7) (see table 26.1) (Initial value) ASEMD0 = 0
0
1
Port output
1
0
Port input (Pullup MOS: on)
(Initial value) ASEMD0 = 1
1
1
Port input (Pullup MOS: off)
If ASEMD0 = 0, port function cannot be selected with any PE7MD1, PE7MD0 value.
(n = 0, 7)
Bit (2n + 1)
PEnMD1
0
0
1
1
Bit 2n
PEnMD0
0
1
0
1
Pin Function
Other function (see table 26.1)
Port output
Port input (Pullup MOS: on)
Port input (Pullup MOS: off)
(Initial value)
(n = 1 to 6)
Rev. 5.00 Dec 12, 2005 page 831 of 1034
REJ09B0254-0500