M32C8A Datasheet, PDF (63/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

M32C/8A Group
7. Processor Mode
Processor Mode Register 0⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
0
11
Symbol
PM0
Address
0004h
After Reset
0000 0011b (CNVSS = "H")
Bit Symbol
Bit Name
Function
RW
PM00
PM01
Processor mode bits⁽²⁾
b1 b0
RW
1 1: Microprocessor mode
Do not set to values other than the above.
RW
PM02
R/W mode select bit
PM03
Software reset bit
PM04
PM05
Multiplexed bus space
select bits⁽³⁾
0: RD/BHE/WR
1: RD/WRH/WRL
RW
The MCU is reset when this bit is set to 1.
Read as 0.
RW
b5 b4
0 0: Multiplexed bus is not used
RW
0 1: Access the CS2 area using multiplexed bus
1 0: Access the CS1 area using multiplexed bus
1 1: Do not set to this value.
RW
ー
(b6)
Reserved bit
Set to 0
RW
PM07
BCLK output function select bit
0: BCLK output ⁽⁴⁾
1: No BCLK output
RW
NOTES:
1. Set the PM0 register after the PRC1 bit in the PRCR register is set to 1 (write enable).
2. Bits PM01 and PM00 maintain values set before reset, even after software reset or watchdog timer reset has performed.
3. The PM05 and PM04 bits setting is enabled in microprocessor mode. Set these bits in the combination with bits PM11 and PM10
in the PM 1 register. Refer to the Table "Multiplexed Bus Settings and Chip-Select Areas" in the Bus chapter.
4. To output BCLK from P5_3 in microprocessor mode, set the PM07 bit to 0, bits CM01 and CM00 in the CM0 register to "00b" (I/O
port P5_3), and bits PM15 and PM14 in the PM1 register to 00b, 10b, or 11b.
Figure 7.1 PM0 Register
Rev.1.00 Jul 15, 2007 Page 46 of 352
REJ09B0385-0100