tmp88f846ug TOSHIBA Semiconductor CORPORATION, tmp88f846ug Datasheet - Page 26
tmp88f846ug
Manufacturer Part Number
tmp88f846ug
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP88F846UG.pdf
(244 pages)
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2.1 Functions of the CPU Core
2. Functional Description
case the device is immediately reset as is normally reset by
ating from NORMAL mode.
The device is released from STOP mode following the sequence described below.
Note: Because the warm-up time is obtained from the fundamental clock by dividing it, if the oscillation
The device can also be released from STOP mode by pulling the
Note: When exiting STOP mode while the device is retained at low voltage, the following caution is
1. Only the high-frequency oscillator is oscillating.
2. A warm-up time is inserted in order to allow for the clock oscillation to stabilize. During
3. After an elapse of the warm-up time, the device restarts normal operation beginning with
frequency fluctuates while exiting STOP mode, the warm-up time becomes to have some error.
Therefore, the warm-up time must be handled as an approximate value.
required.
Before exiting STOP mode, the power supply voltage must be raised to the operating voltage. At
this time, the
device has a time-constant circuit added external to the chip, the voltage on
not rise as fast as the power supply voltage. Therefore, if the voltage level on
below the
reset.
warm-up, the internal circuits remain idle. The warm-up time can be selected from three
choices according to the oscillator characteristics by using SYSCR1<WUT>.
the instruction next to one that placed it in STOP mode. At this time, the prescaler and
divider for the timing generator start from the zero-cleared state.
Table 2-2 Warm-up Time (Example: fc = 20 MHz)
WUT
RESET
00
01
10
11
RESET
pin’s noninverted, high-level input voltage (hysteresis input), the device may be
pin level also is high and rises along with the power supply voltage. If the
DV1CK = 0
Reserved
When Returning to NORMAL Mode
9.831
3.277
0.819
Page 16
Warm-up Time [ms]
DV1CK = 1
Reserved
19.662
6.554
1.638
RESET
. After reset, the device starts oper-
RESET
RESET
RESET
pin input low, in which
pin input does
pin input is
TMP88F846UG
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