M32C85 Datasheet, PDF (83/542 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/85 Group (M32C/85, M32C/85T)
7. Processor Mode
Processor Mode Register 1⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
00
Symbol
PM1
Address
000516
After Reset
0016
Bit
Symbol
Bit Name
Function
RW
PM10
PM11
b1 b0
0 0 : Mode 0 (A20 to A23 for P44 to P47)
0 1 : Mode 1 (A20 for P44,
RW
External Memory Space
CS2 to CS0 for P45 to P47)
Mode Bit^{(2, 4)}
1 0 : Mode 2 (A20, A21 for P44, P45,
CS1, CS0 for P46, P47)
1 1 : Mode 3
RW
(CS3 to CS0 for P44 to P47)
PM12
Internal Memory
Wait Bit
0 : No wait state
1 : Wait state
RW
0 : 1 wait state
PM13 SFR Area Wait Bit
1 : 2 Wait states
RW
b5 b4
PM14
0 0 : No ALE
RW
ALE Pin Select Bit^{(2, 4) 0 1 : P53/BCLK(3)}
PM15
1 0 : P56
1 1 : P54/HLDA
RW
Reserved Bit
(b7-b6)
Set to "0"
RW
NOTES:
1. Rewrite the PM1 register after the PRC1 bit in the PRCR register is set to "1" (write enable).
2. The PM15 and PM14 bit setting, PM11 and PM10 bit setting are available in memory expansion
mode or microprocessor mode.
3. Set the CM01 and CM00 bits in the CM0 register to "002" (I/O port P53) when the PM15 and PM14
bits are set to "012" (P53/BCLK select).
4. M32C/85T cannot be used in memory expansion mode and microprocessor mode.
Figure 7.2 PM1 Register
Rev. 1.03 Jul. 01, 2005 ^{Page 60} of 494
REJ09B0037-0103