M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 259

• 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

10.2 Operation description
When the STP instruction is executed, the oscillator stops oscillating. This state is called “Stop mode.”
In Stop mode, the contents of the internal RAM can be retained intact when the Vcc, power source voltage,
is 2 V or more. Additionally, the microcomputer’s power consumption is reduced. It is because the CPU and
all internal peripheral devices using clocks f
Table 10.2.1 lists the microcomputer state and operation in and after Stop mode.
Table 10.2.1 Microcomputer state and operation in and after Stop mode
State in
Stop mode
Operation
after termi-
nating Stop
mode
Oscillation
B y
occurrence
By hardware reset
CPU
, , clock
i n t e r r u p t
Item
Timer A
Timer B
Serial I/O
A-D converter
Watchdog timer
Pins
1
, f
r e q u e s t
2
to f
512
7702/7703 Group User’s Manual
Stopped
Operating enabled only in event counter mode
Operating enabled only when selecting external clock
Stopped
Retains the same state in which the STP instruction was executed
Supply of
watchdog timer has passed.
Operates in the same way as hardware reset
2
to f
512
stop the operation.
CPU
and
State and Operation
starts after a certain time measured by
10.2 Operation description
STOP MODE
10–3