UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 119
UPD78F9502MA-CAC-A
Manufacturer Part Number
UPD78F9502MA-CAC-A
Description
8BIT MCU, 4K FLASH, 128B RAM, SMD
Manufacturer
NEC
Datasheet
1.UPD78F9502MA-CAC-A.pdf
(229 pages)
Specifications of UPD78F9502MA-CAC-A
Controller Family/series
UPD78F
No. Of I/o's
8
Ram Memory Size
128Byte
Cpu Speed
10MHz
No. Of Timers
2
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
4KB
Oscillator Type
External, Internal
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11.1 Functions of Power-on-Clear Circuit
The power-on-clear circuit (POC) has the following functions.
Cautions 1. If an internal reset signal is generated in the POC circuit, the reset control flag register
Remark This product incorporates multiple hardware functions that generate an internal reset signal. A flag that
Generates internal reset signal at power on.
Compares supply voltage (V
when V
Compares supply voltage (V
when V
DD
DD
indicates the reset cause is located in the reset control flag register (RESF) for when an internal reset
signal is generated by the watchdog timer (WDT) or low-voltage-detection (LVI) circuit. RESF is not
cleared to 00H and the flag is set to 1 when an internal reset signal is generated by WDT or LVI.
For details of RESF, see CHAPTER 10 RESET FUNCTION.
2. Because the detection voltage (V
< V
≥ V
(RESF) is cleared to 00H.
voltage in the range of 2.2 to 5.5 V.
POC
POC
.
.
CHAPTER 11 POWER-ON-CLEAR CIRCUIT
DD
DD
) and detection voltage (V
) and detection voltage (V
Preliminary User’s Manual U18681EJ1V0UD
POC
) of the POC circuit is in a range of 2.1 V 0.1 V, use a
POC
POC
= 2.1 V 0.1 V), and generates internal reset signal
= 2.1 V 0.1 V), and releases internal reset signal
119
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