M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 303

• 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

14.2 Clock
Figure 14.2.1 shows the clock generating circuit block diagram.
Fig. 14.2.1 Clock generating circuit block diagram
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
IN
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
7702/7703 Group User’s Manual
CLOCK GENERATING CIRCUIT
1
1/8
16
1/2
C PU
1/2
1/8
Hold request
f
f
512
32
f
f
f
f
“0”
“1”
2
16
64
512
Watchdog timer
frequency select bit
Operation clock for
internal peripheral devices
(Note)
Watchdog
14.2 Clock
timer
14–3