M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 275

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Fig. 12.1.3 Output start timing of clock
Fig. 12.1.4 Structure of processor mode register
(9) Clock
This signal has the same period as .
In the memory expansion mode, this signal is output externally by setting the clock
bit (bit 7 at address 5E
In the microprocessor mode, this signal is always output externally.
Note: Even in the single-chip mode, the clock
b7
b6
0
b5
externally by setting the clock
mode.
1
b4
b3
CONNECTION WITH EXTERNAL DEVICES
b2
b1
b0
Notes 1: The 1st cycle of clock
Clock
16
Processor mode register (Address 5E
Notes 1: While supplying the Vcc level to the CNVss pin, this bit becomes “1”
2: This applies when writing to clock
) to “1.” Figure 12.1.3 shows the output start timing of clock
Bit
1
2
3
5
0
4
6
7
P4
1
(P4
2: This bit is ignored in the microprocessor mode. (It may be either “0” or “1.”)
2
Writing “1” to clock
pin is outputting “L” level.
Processor mode bits
Software reset bit
Wait bit
Interrupt priority detection time
select bits
Fix this bit to “0.”
Clock
after a reset. (Fixed to “1.”)
2
E
: Bits 0 to 6 are not used for setting of clock
)
12.1 Signals required for accessing external devices
7702/7703 Group User’s Manual
1
1
output select bit
Bit name
1
output select bit to “1” just as in the memory expansion
(Note 2)
1
1
may be shortened; indicated by
output select bit
1
can be output externally. This signal is output
16
b5 b4
0 0 : 7 cycles of
0 1 : 4 cycles of
1 0 : 2 cycles of
1 1 : Not selected
b1 b0
The microcomputer is reset by
writing “1” to this bit. The value is
“0” at reading.
0 0 : Single-chip mode
0 1 : Memory expansion mode
1 0 : Microprocessor mode
1 1 : Not selected
0 : Software Wait is inserted when
1 : No software Wait is inserted
0 : Clock
1 : Clock
)
1
(P4
I/O port.)
(P4
put pin.)
accessing external area.
when accessing external area.
output select bit while
2
2
functions as a programmable
functions as a clock
1
1
Functions
output disabled
output enabled
1
output.
1
out-
(Note 1)
At reset
0
0
0
0
0
0
0
0
RW
RW
RW
RW
WO
RW
RW
RW
RW
1
output select
1.
12–7
.