UPD78F0535GB(T)-UEU-A NEC, UPD78F0535GB(T)-UEU-A Datasheet - Page 159
UPD78F0535GB(T)-UEU-A
Manufacturer Part Number
UPD78F0535GB(T)-UEU-A
Description
8BIT MCU, 60K FLASH, 3KB RAM, LQFP
Manufacturer
NEC
Datasheet
1.UPD78F0535GBT-UEU-A.pdf
(773 pages)
Specifications of UPD78F0535GB(T)-UEU-A
Controller Family/series
UPD78
No. Of I/o's
55
Ram Memory Size
3KB
Cpu Speed
20MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
60KB
Oscillator Type
External, Internal
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Note
Cautions 1. A voltage oscillation stabilization time of 1.93 to 5.39 ms is required after the supply voltage
Remark While the microcontroller is operating, a clock that is not used as the CPU clock can be stopped via
When releasing a reset (above figure) or releasing STOP mode while the CPU is operating on the internal
high-speed oscillation clock, confirm the oscillation stabilization time for the X1 clock using the oscillation
stabilization time counter status register (OSTC). If the CPU operates on the high-speed system clock (X1
oscillation), set the oscillation stabilization time when releasing STOP mode using the oscillation
stabilization time select register (OSTS).
software settings.
stopped by executing the STOP instruction (see (4) in 6.6.1 Example of controlling high-speed
system clock, (3) in 6.6.2 Example of controlling internal high-speed oscillation clock, and (4) in
6.6.3 Example of controlling subsystem clock).
2. It is not necessary to wait for the oscillation stabilization time when an external clock input
reaches 1.59 V (TYP.). If the supply voltage rises from 1.59 V (TYP.) to 2.7 V (TYP.) within 1.93
ms, the power supply oscillation stabilization time of 0 to 5.39 ms is automatically generated
before reset processing.
from the EXCLK and EXCLKS pins is used.
The internal high-speed oscillation clock and high-speed system clock can be
CHAPTER 6 CLOCK GENERATOR
User’s Manual U17260EJ6V0UD
159
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