M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 54

• 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

Table 2.5.2 Methods for setting processor modes
Notes 1: The microcomputer starts operating in the single-chip mode after a reset. The microcomputer can
Fig. 2.5.4 Structure of processor mode register
CENTRAL PROCESSING UNIT (CPU)
2.5 Processor modes
Single-chip mode
Memory expansion mode
Microprocessor mode
2–26
b7
2: The microcomputer starts operating in the microprocessor mode after a reset. The microcomputer
b6
0
be switched to the other processor modes by setting the processor mode bits.
cannot operate in the other modes, so that fix the processor mode bits as follows:
•b1 = “1” and b0 = “0.”
Processor mode
b5
b4
b3
b2
b1
b0
Processor mode register (Address 5E
Notes 1: While supplying the Vcc level to the CNVss pin, this bit becomes “1”
Bit
1
2
3
5
0
4
6
7
2: This bit is ignored in the microprocessor mode. (It may be either “0” or “1.”)
: Bits 7 to 2 are not used for setting of the processor mode.
Processor mode bits
Wait bit
Software reset bit
Interrupt priority detection time
select bits
Fix this bit to “0.”
Clock
Vcc (5 V) (Note 2)
Vss (0 V) (Note 1)
Vss (0 V) (Note 1)
Vss (0 V) (Note 1)
after a reset. (Fixed to “1.”)
7702/7703 Group User’s Manual
1
output select bit
Bit name
CNVss pin level
(Note 2)
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 : Software Wait is inserted when
1 : No software wait is inserted
0 : Clock
1 : Clock
0 0 : Single-chip mode
0 1 : Memory expansion mode
1 0 : Microprocessor mode
1 1 : Not selected
)
(P4
I/O port.)
(P4
put pin.)
accessing external area.
when accessing external area.
2
2
functions as a programmable
functions as a clock
1
1
Functions
output disabled
output enabled
Processor mode bits
b1
0
0
1
1
out-
(Note1)
At reset
0
0
0
0
0
0
0
0
b0
1
0
RW
0
RW
RW
RW
WO
RW
RW
RW
RW