M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 272

• 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 12.1.1 Functions of pins P0 to P4 and E pin in memory expansion and microprocessor modes
Notes 1:The 7703 Group does not have the HLDA pin.
CONNECTION WITH EXTERNAL DEVICES
12.1 Signals required for accessing external devices
12–4
A
A
R/W (P3
A
(P1)
(P2)
HLDA (P3
ALE (P3
BHE (P3
P4
RDY (P4
(P0)
HOLD (P4
E
Pin
7
15
23
1
7
— A
/D
/D
(P4
— P4
2:In the memory expansion mode, this pin functions as a programmable I/O port and can be programmed as the clock
3:This table shows the pins’ functions. Refer to the following about the input/output timing of each signal:
4:Fix bits 0 and 1 of the Port P4 direction register to “0.” Perform the setup regardless of whether using the P4
15
7
P4
External data bus
“ 12.1.2 Operation of bus interface unit (BIU) ”; “12.2 Software Wait ”; “12.3 Ready function ”; “12.4 Hold function”;
“ Chapter 15. Electrical characteristics .”
output pin by software.
— A
2
0
— A
1
)
2
0
/RDY pins as the HOLD or RDY pins or not. For the external ROM version, perform the same setup.
1
1
)
)
)
)
3
3
0
)
16
)
8
/D
/D
width
8
0
A
A
A
H O LD
A
R D Y
H LD A
ALE
BH E
R / W
P4
7
15
A
E
23
8
— A
/D
1
/D
16
/D
7
/D
8
— P4
15
7
0
—
0
—
3
P: Functions as a programmable I/O port.
A
A
(BYTE = “L”)
15
23
1
D(even): Data at even address
D(odd): Data at odd address
— A
— A
16 bits
ALE
A
7702/7703 Group User’s Manual
7
8
16
H O LD
— A
H LD A
R D Y
BH E
R / W
P
D(even)
0
D(odd)
_
E
(Note 1)
(Note 4)
(Note 4)
(Note 2)
A
A
A
15
23
16
/D
— A
/D
7
—
0
8
A
(BYTE = “H”)
23
— A
8 bits
A
16
15
— A
8
D
0
D: Data
/HOLD and
1