UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 14

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

CHAPTER 19 RESET FUNCTION........................................................................................................ 553
CHAPTER 20 MULTIPLIER/DIVIDER ................................................................................................... 562
CHAPTER 21 POWER-ON-CLEAR CIRCUIT...................................................................................... 571
CHAPTER 22 LOW-VOLTAGE DETECTOR ....................................................................................... 577
CHAPTER 23 OPTION BYTE............................................................................................................... 595
CHAPTER 24 FLASH MEMORY .......................................................................................................... 600
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19.1 Register for Confirming Reset Source ................................................................................... 561
20.1 Functions of Multiplier/Divider................................................................................................ 562
20.2 Configuration of Multiplier/Divider ......................................................................................... 562
20.3 Register Controlling Multiplier/Divider .................................................................................. 566
20.4 Operations of Multiplier/Divider.............................................................................................. 567
21.1 Functions of Power-on-Clear Circuit...................................................................................... 571
21.2 Configuration of Power-on-Clear Circuit ............................................................................... 572
21.3 Operation of Power-on-Clear Circuit ...................................................................................... 572
21.4 Cautions for Power-on-Clear Circuit ...................................................................................... 575
22.1 Functions of Low-Voltage Detector........................................................................................ 577
22.2 Configuration of Low-Voltage Detector ................................................................................. 578
22.3 Registers Controlling Low-Voltage Detector......................................................................... 578
22.4 Operation of Low-Voltage Detector ........................................................................................ 581
22.5 Cautions for Low-Voltage Detector ........................................................................................ 592
23.1 Functions of Option Bytes ...................................................................................................... 595
23.2 Format of Option Byte ............................................................................................................. 597
24.1 Internal Memory Size Switching Register.............................................................................. 600
24.2 Internal Expansion RAM Size Switching Register ................................................................ 601
24.3 Writing with Flash Memory Programmer ............................................................................... 602
24.4 Programming Environment ..................................................................................................... 605
24.5 Communication Mode.............................................................................................................. 605
24.6 Connection of Pins on Board.................................................................................................. 607
24.7 Programming Method .............................................................................................................. 611
20.4.1 Multiplication operation...................................................................................................................567
20.4.2 Division operation...........................................................................................................................569
22.4.1 When used as reset .......................................................................................................................582
22.4.2 When used as interrupt ..................................................................................................................587
24.6.1 FLMD0 pin......................................................................................................................................607
24.6.2 Serial interface pins........................................................................................................................607
24.6.3 RESET pin......................................................................................................................................609
24.6.4 Port pins .........................................................................................................................................609
24.6.5 REGC pin .......................................................................................................................................609
24.6.6 Other signal pins ............................................................................................................................609
24.6.7 Power supply..................................................................................................................................610
24.7.1 Controlling flash memory................................................................................................................611
24.7.2 Flash memory programming mode.................................................................................................611
User’s Manual U17554EJ4V0UD