MITSUBISHI MICROCOMPUTERS
M37920S4CGP
16-BIT CMOS MICROCOMPUTER
7
6
5
4
3
2
1
0
Address
5F16
Processor mode register 1
Fix this bit to “0”.
0
0
0
Direct page register switch bit
0 : Only DPR0 is used.
1 : DPR0 to DPR3 are used.
RDY input select bit
0 : RDY input is disabled. (P30 functions as a programmable I/O port pin.)
1 : RDY input is enabled. (P30 functions as pin RDY.)
ALE output select bit
0 : ALE output is disabled. (P40 functions as a programmable I/O port pin.)
1 : ALE output is enabled. (P40 functions as pin ALE.)
Recovery cycle insert select bit
0 : No recovery cycle is inserted at access to the external area.
1 : Recovery cycle is inserted at access to the external area.
HOLD input, HLDA output select bit
0 : HOLD input and HLDA output are disabled.
(P40 and P44 function as programmable I/O port pins.)
1 : HOLD input and HLDA output are enabled.
(P43 and P44 function as pins HOLD and HLDA, respectively.)
“0” at read.
Fig. 5 Processor mode register 1’s bit configuration
11
RENESAS [ RENESAS TECHNOLOGY CORP ]
