M37735S4LHP Datasheet, PDF (15/37 Pages) Mitsubishi Electric Semiconductor – 16-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
M37735S4LHP
16-BIT CMOS MICROCOMPUTER
As shown in Table 3, 1 output can be stopped with the signal
output disable selection bit = “1”. In this case, write “1” to the port P42
direction register.
Table 1 shows the relationship between the CNVss pin input level
and the processor mode.
Table 1. Relationship between CNVss pin input levels and processor
mode
CNVss
Mode
Description
Vcc
• Microprocessor Microprocessor mode upon
starting after reset.
___
___
Table 2. Relationship between access addresses and chip-select signals CS0 to CS4
Chip-select
signal
___
CS0
___
CS1
___
CS2
Area
The first half of bank 0016 except
internal memory area
The latter half of bank 0016 except
internal memory area and banks
0116 to 0316.
Banks 0416 to 0716
___
CS3
Banks 0816 to 0B16
___
CS4
Banks 0C16 to 0F16
Access address
Microprocessor mode
00 088016
to
00 7FFF16
00 800016
to
03 FFFF16
04 000016
to
07 FFFF16
08 000016
to
0B FFFF16
0C 000016
to
0F FFFF16
Table 3. Function of signal output disable selection bit CM6 (bit 6 of oscillation circuit control register 0)
Processor mode
Microprocessor mode
Pin
___
RDE,
___
WEL, WEH
___
RDE
1
Function
CM6 = “0”
___ ___ ___
RDE, WEL, WEH are output when the
internal/external memory area is accessed.
After WIT/STP instruction is executed,
“H” is output.
Clock 1 is output independent of 1
output selection bit.
CM6 = “1”
___ ___ ___
RDE, WEL, WEH are output only when the
external memory area is accessed.
“L” is output after WIT/STP instruction is
executed
∗ Standby state selection bit (bit 0 of port
function control register) must be set to “1”.
“H” or “L” is output. (Contents of P42 port
latch is output.)
∗ Port P42 direction register must be set to
“1”.
Note. Functions shown in Table 3 cannot be emulated with a debugger. For the oscillation circuit control register 0 and port function control
register, refer to Figures 64 and 11 in data sheet “M37735MHBXXXFP”, respectively.
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