tmp88cs38ng TOSHIBA Semiconductor CORPORATION, tmp88cs38ng Datasheet - Page 17

• Manufacturer Part Number: tmp88cs38ng
• Description: Cmos 8-bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

(2) IDLE mode
Example: Starting IDLE mode.
performs the normal reset operation.
The following status is maintained during IDLE mode.
Note: When STOP mode is released with a low hold voltage, the following cautions must
1.
2.
3.
STOP mode can also be released by setting the
IDLE mode is controlled by the system control register 2 and maskable interrupts.
Operation of the CPU and watchdog timer is halted. On-chip peripherals continue
to operate.
The data memory, CPU registers and port output latches are all held in the status
in effect before IDLE mode was entered.
The program counter holds the address of the instruction following the instruction
which started IDLE mode.
SET
be observed.
The power supply voltage must be at the operating voltage level before releasing
STOP mode. The
power supply voltage. In this case, if an external time constant circuit has been
connected, the
power supply voltage. At this time, there is a danger that a reset may occur if input
voltage level of the
voltage (Hysteresis input).
(SYSCR2). 4
Normal
release mode
No
No
Figure 1.4.12 IDLE Mode
RESET
instruction which follows
CPU, WDT are halted
Interrupt processing
the IDLE mode start
RESET
Starting IDLE mode
Interrupt request
Execution of the
88CS38-17
RESET
by instruction
Reset input
instruction
pin input voltage will increase at a slower rate than the
IMF = 1
;
pin input must also be high, rising together with the
IDLE ← 1
No (High)
Yes (Interrupt release mode)
Yes
pin drops below the non-inverting high-level input
Yes
Reset
RESET
TMP88CS38/CM38A/CP38A
pin low, which immediately
2007-09-12