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MITSUBISHI MICROCOMPUTERS
M37920S4CGP
16-BIT CMOS MICROCOMPUTER
7
6
5
4
3
2
1
0
0
0
0
Processor mode register 1
Fix this bit to “0”.
Direct page register switch bit
0 : Only DPR0 is used.
1 : DPR0 to DPR3 are used.
Address
5F
16
RDY input select bit
0 : RDY input is disabled. (P3
0
functions as a programmable I/O port pin.)
1 : RDY input is enabled. (P3
0
functions as pin RDY.)
ALE output select bit
0 : ALE output is disabled. (P4
0
functions as a programmable I/O port pin.)
1 : ALE output is enabled. (P4
0
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.
(P4
0
and P4
4
function as programmable I/O port pins.)
1 : HOLD input and HLDA output are enabled.
(P4
3
and P4
4
function as pins HOLD and HLDA, respectively.)
“0” at read.
Fig. 5 Processor mode register 1’s bit configuration
11
RENESAS [ RENESAS TECHNOLOGY CORP ]
