M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 483

• 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. 13 Wiring of CNVss (V
(4) Wiring of CNVss (V
< In single-chip or memory expansion mode>
< In microprocessor mode>
Reasons: The CNVss (V
Connect the CNVss (V
If the wiring cannot be shortened, insert a resistor of about 5 kohms as close to the CNVss (V
Connect the CNVss (V
pin as possible. By way of this resistor, connect the CNVss (V
memory expansion modes
Connect the CNVss pin to
the Vss pin in the shortest
possible distance.
The above processing is unnecessary for the BYTE (V
In single-chip and
pin has a reduced impedance to allow a programming current to flow in when programming
to the built-in PROM. (This means that noise gets in easily.)
If noise gets into the CNVss (V
from the built-in PROM, causing a program runaway.
CNV
M37702
SS
(V
PP
V
PP
PP
SS
) pin of built-in PROM version
) pin of built-in PROM version
)
PP
PP
PP
Shortest possible
distance
) pin serves as a power source input pin for the built-in PROM, and this
) pin to the microcomputer’s Vss pin in the shortest possible distance.
) and Vcc pins in the shortest possible distance.
7702/7703 Group User’s Manual
Approx. 5 kohms
PP
Appendix 5. Countermeasures against noise
) pin, abnormal instruction codes or data will be read out
PP
) pin.
Connect the CNVss pin to
the Vcc pin in the shortest
possible distance.
In microprocessor mode
CNV
M37702
SS
PP
(V
) pin to the Vss pin.
V
PP
CC
)
Shortest possible
distance
APPENDIX
21–37
PP
)