R8C-12_1 Datasheet, PDF (41/198 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / R8C /Tiny SERIES

R8C/12 Group
8. Processor Mode
8. Processor Mode
8.1 Types of Processor Mode
The processor mode is single-chip mode. Table 8.1 shows the features of the processor mode. Figure 8.1
shows the PM0 and PM1 register.
Table 8.1 Features of Processor Mode
Processor mode
Access space
Single-chip mode
SFR, internal RAM, internal ROM
Pins which are assigned I/O ports
All pins are I/O ports or peripheral
function I/O pins
Processor mode register 0⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
000
Symbol
PM0
Address
000416
After reset
0016
Bit symbol
Bit name
Function
RW
(b2-b0)
Reserved bit
Set to “0”
RW
PM03
Software reset bit
Setting this bit to “1” resets the
microcomputer. When read, its ^RW
content is “0”.
(b7-b4)
Nothing is assigned. When write, set to “0”. When read, its
content is 0.
NOTES:
1. Set the PRC1 bit in the PRCR register to "1" (write enable) before writing to this register.
Processor mode register 1⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
0
0
Symbol
PM1
Address
000516
After reset
0016
Bit symbol
Bit name
Function
RW
PM10
Data area access enable 0 : Disabled
bit
1 : Enabled
RW
(b1)
Reserved bit
Set to “0”
RW
PM12
WDT interrupt/reset
switch bit⁽²⁾
0 : Watchdog timer interrupt
1 : Watchdog timer reset⁽²⁾
RW
(b6-b3)
Nothing is assigned. When write, set to “0”. When read, its
content is 0.
(b7)
Reserved bit
Set to “0”
RW
NOTES:
1. Set the PRC1 bit in the PRCR register to "1" (write enable) before writing to this register.
2. PM12 bit is set to “1” by writing a “1” in a program. (Writing a “0” has no effect.)
Figure 8.1 PM0 Register and PM1 Register
Rev.1.20 Jan 27, 2006 page 31 of 181
REJ09B0110-0120