SH7059 Datasheet, PDF (683/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. Pin Function Controller (PFC)
22.3.11 Port E Control Register (PECR)
Bit: 15
14
13
12
11
10
9
8
PE15 PE14 PE13 PE12 PE11 PE10 PE9 PE8
MD
MD
MD
MD
MD
MD
MD
MD
Initial value: 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
Bit: 7
6
5
4
3
2
1
0
PE7 PE6 PE5 PE4 PE3 PE2 PE1 PE0
MD
MD
MD
MD
MD
MD
MD
MD
Initial value: 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
The port E control register (PECR) is a 16-bit readable/writable register that selects the functions of the 16 multiplex pins
in port E. PECR settings are not valid in all operating modes.
1. Expanded mode with on-chip ROM disabled
Port E pins function as address output pins, and PECR settings are invalid.
2. Expanded mode with on-chip ROM enabled
Port E pins are multiplexed as address output pins and general input/output pins. PECR settings are valid.
3. Single-chip mode
Port E pins function as general input/output pins, and PECR settings are invalid.
PECR is initialized to H'0000 by a power-on reset (excluding a WDT power-on reset), in hardware standby mode, and in
software standby mode. It is not initialized in sleep mode.
• Bit 15—PE15 Mode Bit (PE15MD): Selects the function of pin PE15/A15.
Bit 15:
PE15MD
0
1
Expanded Mode
with ROM Disabled
Address output (A15) (Initial
value)
Address output (A15)
Description
Expanded Mode
with ROM Enabled
Single-Chip Mode
General input/output (PE15) (Initial General input/output (PE15) (Initial
value)
value)
Address output (A15)
General input/output (PE15)
• Bit 14—PE14 Mode Bit (PE14MD): Selects the function of pin PE14/A14.
Bit 14: PE14MD
0
1
Expanded Mode
with ROM Disabled
Address output (A14) (Initial
value)
Address output (A14)
Description
Expanded Mode
with ROM Enabled
Single-Chip Mode
General input/output (PE14) (Initial General input/output (PE14) (Initial
value)
value)
Address output (A14)
General input/output (PE14)
• Bit 13—PE13 Mode Bit (PE13MD): Selects the function of pin PE13/A13.
Rev.3.00 Mar. 12, 2008 Page 593 of 948
REJ09B0177-0300