M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 445

• 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 20.6.2 PROM versions having peculiar bus timing
Table 20.6.3 Substitutes
Type name
M37703E2AXXXSP
M37703E4AXXXSP
Type name to be used
M37703E2AXXXSP M37703E2BXXXSP The substitute has the higher frequency of external clock input.
M37703E4AXXXSP M37703E4BXXXSP
20.6.2 Bus timing and EPROM mode
The PROM versions shown in Table 20.6.2 have the different bus timing from other PROM versions, mask
ROM, external ROM versions. Additionally, they can use only 256K mode as the EPROM mode though its
PROM size is 32 Kbytes or less.
(1) Bus timing
(2) EPROM mode
The limits and formulas of the PROM versions having the peculiar bus timing which is different from
other PROM versions are shown in Table 20.6.2.
When the user is planning to use the product shown in Table 20.6.2 for evaluation or in early
production and replace it later with the mask ROM version, we recommend to use the substitute
shown in Table 20.6.3 for evaluation or in early production.
However, the substitute version has the higher frequency of external clock input. There are no
precaution about its operation.
The products shown in Table 20.6.2 can use only 256K mode as the EPROM mode. Do not use 1M
mode.
Bus timing
Limits: 50 ns
Formulas:
2
1
f(X
Substitute
IN
f(X
)
10
IN
9
)
8 MHz
– 12.5
t
pzx(E – P1Z)
7702/7703 Group User’s Manual
Remark
Limits: 25 ns
Formulas:
, t
8MHz < f(X
pzx(E – P2Z)
2
1
f(X
10
IN
9
)
IN
)
– 6.25
16 MHz
7703 GROUP
20.6 PROM version
20–15