M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 407

• 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. 18.6.7 Memory expansion example on maximum model
18.6.4 Memory expansion example on maximum model
Figure 18.6.7 shows a memory expansion example on the maximum model. Figure 18.6.8 shows the
corresponding timing diagram. In this example, Atmel company’s EPROMs (AT27LV256R) are used as the
external ROMs.
In Figure 18.6.7, the circuit condition is “No Wait.”
1, 2 :
3:
Use the elements of which propagation delay time is within 30 ns.
Use the elements of which propagation delay time is within 50 ns.
Vcc = 3.0–3.3 V
M37702S1L
BYTE
X
IN
–
A
A
–
15
D
A
A
A
X
16
2–
BHE
8
/D
17
R/W
OUT
1–
ALE
/D
/D
D
A
15
/D
A
E
8
0
8 MHz
7
7
0
1
AC573
D Q
D Q
Data bus (odd)
AC32
Data bus (even)
LE
LE
AC04
1
Circuit condition : no Wait
A
2
Address bus
A
16
8–
7702/7703 Group User’s Manual
A
3
A
1–
16
A
D
A
17
8–
15
AC32
D
15
2
D
A
RD
0–
0–
WE
WO
D
A
CE
OE
7
14
AT27LV256R-15DI
LOW VOLTAGE VERSION
A1–A15
D0–D7
A0
D0
–
–
A14
D7
OE
CE
AC04
AC32
D
A
8–
1–
D
A
15
16
DQ
S
A
2
0–
OE W
1–
A
00FFFF
000000
000080
000280
020000
03FFFF
M5M51008AFP-10VLL
S
DQ
15
1
8
A
16
16
16
16
16
A1–A16
16
D0–D7
16
18.6 Application
(M5M51008AFP 2)
Memory map
(AT27LV256R 2 )
DQ
S
A
RAM area
SFR area
RAM area
ROM area
Not used
2
0–
External
External
Internal
1–
OE W
A
DQ
S
15
1
8
A
16
18–41