R8C/13 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
Pins which are assigned I/O ports
All pins are I/O ports or peripheral
function I/O pins
Single-chip mode
SFR, internal RAM, internal ROM
(1)
Processor mode register 0
Symbol
PM0
Address
000416
After reset
0016
b7 b6 b5 b4 b3 b2 b1 b0
0
0
0
Bit symbol
Bit name
Function
RW
RW
Set to “0”
Reserved bit
(b2-b0)
PM03
Setting this bit to “1” resets the
microcomputer. When read, its
content is “0”.
Software reset bit
RW
Nothing is assigned. When write, set to “0”. When read, its
content is "0".
(b7-b4)
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
Symbol
PM1
Address
000516
After reset
0016
0
0
Bit symbol
PM10
Bit name
Function
0 : Disabled
1 : Enabled
RW
RW
Data area access enable
bit
Set to “0”
Reserved bit
RW
RW
(b1)
WDT interrupt/reset
0 : Watchdog timer interrupt
1 : Watchdog timer reset 2)
PM12
(
switch bit 2)
(
Nothing is assigned. When write, set to “0”. When read, its
content is 0.
(b6-b3)
(b7)
Set to “0”
RW
Reserved bit
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 45 of 205
REJ09B0111-0120
RENESAS [ RENESAS TECHNOLOGY CORP ]
