M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 348

• 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

APPLICATION
17.1 Memory expansion
Fig. 17.1.10 Example of causing to delay data output timing
17–14
Because the external memory outputs data within t
there will be a possibility of the tail of address colliding with the head of data. In this case,
generate the memory read signal (OE) by delaying only the leading edge of the fall of the E. (Refer
to Figure 17.1.10.)
When using external memory that outputs data within t
output enable signal
External memory
External memory
Address output
Note: Satisfy
(Read signal)
data output
If
by delaying the falling edge of OE after the falling edge of E .
t
en
(OE)
t
pxz
OE
t
(E-P1Z/P2Z)
pxz
E
(E-P1Z/P2Z)
7702/7703 Group User’s Manual
t
en
__
(= 5 ns), ensure a certain time (i.e., ‘d’ in this diagram)
Address
(OE)
+d.
: Specifications of the M37702
(The others are specifications of external memory.)
pxz(E-P1Z/P2Z)
d
t
pxz
t
en
t
pxz(E-P1Z/P2Z)
a
(OE)
(E-P1Z/P2Z)
(OE)
Data
after the falling edge of the E signal,
after falling edge of E signal
Address
_
_
_