MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
7
0
6
5
4
3
2
1
0
0
0
Address
Processor mode register 1 5F16
These bits must be “00.”
Clock source for peripheral devices select bit (Note)
0 : φ1/2
1 :φ1
CPU running speed select bit
0 : High-speed running
1 : Low-speed running
Bus cycle select bits
In high-speed running
00 : 5-φ access in high-speed running
01 : 4-φ access in high-speed running
10 : 3-φ access in high-speed running
11 : Do not select.
In low-speed running
00 : Do not select.
01 : 4-φ access in low-speed running
10 : 3-φ access in low-speed running
11 : 2-φ access in low-speed running
Clock source select bit
0 : φ1 = f(XIN)/2
1 : φ1 = f(XIN)
This bit must be “0.”
Note: When φ1 > 12.5 MHz, set bit 2 to “0.”
Fig. 9 Processor mode register 1 bit configuration
17
RENESAS [ RENESAS TECHNOLOGY CORP ]
