M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 264
M37702E6BFS
Manufacturer Part Number
M37702E6BFS
Description
EPROM MCU/8BIT CMOS EMULATION CH
Manufacturer
Renesas Electronics America
Datasheet
1.M37702E6BFS.pdf
(524 pages)
Specifications of M37702E6BFS
Accessory Type
Emulator EPROM MCU
For Use With/related Products
7702
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M37702E6BFS
Manufacturer:
MITSUBISHI/三菱
Quantity:
20 000
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Fig. 11.1.1 Clock generating circuit
WAIT MODE
11.1 Clock generating circuit
11–2
This chapter describes Wait mode.
Wait mode is used to stop
The oscillator continues its oscillation. The microcomputer enters Wait mode when the WIT instruction is
executed.
Wait mode can be terminated by an interrupt request occurrence or the hardware reset.
11.1 Clock generating circuit
Figure 11.1.1 shows the clock generating circuit.
Note: This is the signal generated when the watchdog timer’s most significant bit becomes “0.”
Interrupt request
Watchdog timer frequency select bit: Bit 0 at address 61
STP instruction
WIT instruction
Reset
R
R
R
S
S
S
Q
Q
Q
X
CPU
IN
and
Ready request
CPU: Central Processing Unit
BIU: Bus Interface Unit
Request of CPU wait
from BIU
(acceptance of Hold
request included)
X
OUT
1/2
when there is no need to operate the central processing unit (CPU).
7702/7703 Group User’s Manual
1
1/8
16
1/2
C PU
1/2
1/8
Hold request
f
f
512
32
f
f
f
f
2
512
16
64
Watchdog timer
frequency select bit
Operation clock for
internal peripheral devices
Watchdog timer’s
underflow signal
(Note)
Watchdog
timer
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