UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 9

• Manufacturer Part Number: UPD78F9502MA-CAC-A
• Description: 8BIT MCU, 4K FLASH, 128B RAM, SMD
• Manufacturer: NEC

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

CHAPTER 4 PORT FUNCTIONS........................................................................................................... 48
CHAPTER 5 CLOCK GENERATORS................................................................................................... 60
CHAPTER 6 8-BIT TIMER H1 ............................................................................................................... 72
CHAPTER 7 WATCHDOG TIMER ......................................................................................................... 87
4.1 Functions of Ports........................................................................................................................ 48
4.2 Port Configuration........................................................................................................................ 49
4.3 Registers Controlling Port Functions ........................................................................................ 55
4.4 Operation of Port Function.......................................................................................................... 59
5.1 Functions of Clock Generators................................................................................................... 60
5.2 Configuration of Clock Generators ............................................................................................ 61
5.3 Registers Controlling Clock Generators.................................................................................... 63
5.4 System Clock Oscillators ............................................................................................................ 65
5.5 Operation of CPU Clock Generator ............................................................................................ 66
5.6 Operation of Clock Generator Supplying Clock to Peripheral Hardware............................... 70
6.1 Functions of 8-Bit Timer H1 ........................................................................................................ 72
6.2 Configuration of 8-Bit Timer H1 .................................................................................................. 72
6.3 Registers Controlling 8-Bit Timer H1 ......................................................................................... 75
6.4 Operation of 8-Bit Timer H1......................................................................................................... 77
7.1 Functions of Watchdog Timer..................................................................................................... 87
7.2 Configuration of Watchdog Timer .............................................................................................. 89
7.3 Registers Controlling Watchdog Timer ..................................................................................... 90
7.4 Operation of Watchdog Timer..................................................................................................... 92
3.4.7 Stack addressing............................................................................................................................... 47
4.2.1 Port 2 ................................................................................................................................................ 49
4.2.2 Port 3 ................................................................................................................................................ 53
4.2.3 Port 4 ................................................................................................................................................ 54
4.4.1 Writing to I/O port .............................................................................................................................. 59
4.4.2 Reading from I/O port........................................................................................................................ 59
4.4.3 Operations on I/O port....................................................................................................................... 59
5.1.1 System clock oscillators .................................................................................................................... 60
5.1.2 Clock oscillator for interval time generation....................................................................................... 60
5.4.1 High-speed internal oscillator ............................................................................................................ 65
5.4.2 External clock input circuit................................................................................................................. 65
5.4.3 Prescaler ........................................................................................................................................... 65
6.4.1 Operation as interval timer/square-wave output................................................................................ 77
6.4.2 Operation as PWM output mode ....................................................................................................... 81
7.4.1 Watchdog timer operation when “low-speed internal oscillator cannot be stopped” is selected by
7.4.2
option byte ....................................................................................................................................... 92
selected by option byte .................................................................................................................... 94
Watchdog timer operation when “low-speed internal oscillator can be stopped by software” is
Preliminary User’s Manual U18681EJ1V0UD
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