tmp89fm82 TOSHIBA Semiconductor CORPORATION, tmp89fm82 Datasheet - Page 51
tmp89fm82
Manufacturer Part Number
tmp89fm82
Description
8 Bit Microcontroller Tlcs-870/c1 Series
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM82.pdf
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Table 2-4 Oscillation Start Operation at Release of the STOP Mode
Single-clock mode
Operation mode before the STOP
Dual-clock mode
(3)
mode is started
The STOP mode is released in the following sequence:
Note:When the STOP mode is released with a low hold voltage, the following cautions must be ob-
STOP mode release operation
3. Release by the voltage detection circuits
1. Oscillation starts. For the oscillation start operation in each mode, refer to "Table 2-4 Oscil-
2. Warm-up is executed to secure the time required to stabilize oscillation. The internal operations
3. After the warm-up time has elapsed, the normal operation is restarted by the instruction that
NORMAL1
NORMAL2
SLOW1
served.
The supply voltage must be at the operating voltage level before releasing the STOP mode. The
RESET pin input must also be "H" level, rising together with the supply voltage. In this case, if
an external time constant circuit has been connected, the RESET pin input voltage will increase
at a slower pace than the power supply voltage. At this time, there is a danger that a reset may
occur if the input voltage level of the RESET pin drops below the non-inverting high-level input
voltage (Hysteresis input).
a voltage detection reset signal", the STOP mode is released and a reset is applied as soon as
the supply voltage becomes lower than the detection voltage.
detection circuits, the reset is released and the warm-up starts. After the warm-up is completed,
the NORMAL1 mode becomes active.
lation Start Operation at Release of the STOP Mode".
remain stopped during warm-up. The warm-up time is set by the warm-up counter, depending
on the oscillator characteristics.
follows the STOP mode start instruction. At this time, the prescaler and the divider of the
timing generator are cleared to "0".
The STOP mode is released by inputting the prescribed level to the key-on wakeup pin.
The level to release the STOP mode can be selected from "H" and "L".
For release by the key-on wakeup, refer to section "Key-on Wakeup".
The STOP mode is released by the supply voltage detection by the voltage detection circuits.
If the voltage detection operation mode of the voltage detection circuits is set to "Generates
When the supply voltage becomes equal to or higher than the detection voltage of the voltage
For details, refer to the section of the voltage detection circuits.
clock oscillation cir-
clock oscillation cir-
Note: If the key-on wakeup pin input becomes the opposite level to the release level after the
Note: If the supply voltage becomes equal to or higher than the detection voltage within 1 ma-
High-frequency
High-frequency
High-frequency
clock
cuit
cuit
warm-up starts, the STOP mode is not restarted.
chine cycle after SYSCR1<STOP> is set to "1", the STOP mode will not be released.
-
clock oscillation cir-
clock oscillation cir-
Page 35
Low-frequency
Low-frequency
Low-frequency
clock
cuit
cuit
-
The high-frequency clock oscillation circuit starts os-
cillation.
The low-frequency clock oscillation circuit stops os-
cillation.
The high-frequency clock oscillation circuit starts os-
cillation.
The low-frequency clock oscillation circuit starts os-
cillation.
The high-frequency clock oscillation circuit stops os-
cillation.
The low-frequency clock oscillation circuit starts os-
cillation.
Oscillation start operation after release
TMP89FM82
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