UPD79F7025/7026 products are most suitable for a simple micro wave oven, display of wall control panel of water heater and display of AV application.

Pin Count / Memory Size Lineup

UPD79F7025/7026-Pin Count / Memory Size Lineup

Block Diagram

Key Features

  • 78K0 CPU core
  • I/O input, ROM and RAM capacities
I/O input Program Memory(Flash Memory) Data Memory(Internal High-Speed RAM)
μPD79F7025 28(CMOS I/O: 27, CMOS input: 1) 8 KB 512 bytes
μPD79F7026 16 KB 768 bytes
  • Low power consumption
    • Internal high-speed oscillation mode: 850 μA (TYP.) (at VDD = 5.0 V, fIH = 4 MHz operation)
    • STOP mode: 1.0μA (TYP.)(at VDD = 5.0 V)
  • Clock
    High-speed system clock … Selected from the following three source
    • Ceramic/crystal oscillator: 1 to 10 MHz
    • External clock: 1 to 10 MHz
    • Internal high-speed oscillator: 4 MHz ± 3 % (TA = −40 to 85 °C)
    • Low-speed system oscillator 240 kHz ± 10 % … Watchdog timer, timer clock in intermittent operation
  • Power-on-clear (POC) circuitLow-voltage detector (LVI) (An interrupt/reset (selectable) is generated when the detection voltage is reached))
    • Detection voltage: Selectable from three levels between 3.93 and 4.24 V
  • Single-power-supply flash memory
    • Software protection function: Protected from outside party copying (no flash reading command)
  • Safety function
    • Watchdog timer operated by clock independent from CP
      ...A hang-up can be detected even if the system clock stops
    • Supply voltage drop detectable by LVI
      … Appropriate processing can be executed before the supply voltage drops below the operation voltage
    • Equipped with option byte function
      … Important system operation settings set in hardware
  • Timer
    • 16-bit timer/event counter … PPG output, capture input, external event counter input
    • 8-bit timers H0, H1 … PWM output, operable with low-speed internal oscillation clock
    • 8-bit timer/event counter 5 … External event counter input
    • Watchdog timer … Operable with low-speed internal oscillation clock
Products/Item 16-bit timer/event counte 8-bit timer Watchdog timer
μPD79F7025 1 ch Timer H:2 ch 1 ch
μPD79F7026 Timer 5:1 ch
  • On-chip debug function …Available to control for the target device, and to reference memory
  • Assembler and C language supported
  • Development tools
    Support for simplified emulator (MINICUBE2)
    • Power supply voltage: VDD = 4.5 to 5.5 V
    • Operating ambient temperature: TA = –40 to +85°C

Outline of functions

Item μPD79F7025 μPD79F7026
Internal Memory Flash memory 8 KB 16 KB
High-speed RAM 512 bytes 768 bytes
Memory Space
64 KB
Main high-speed system
oscillation, external
clock input)
1 to 10 MHz:VDD = 2.7 to 5.5 V
Internal high-speed
4 MHz ± 3 % (TA = −40 to+85 °C)
Internal low-speed
240 kHz ± 10 %
General-purpose registers 8 bit ×32 registers(8 bits × 8registers ×4 banks)
Instruction set 8-bit operation, 16-bit operation
Multiply/divide (8 bits × 8 bits, 16 bits ÷ 8 bits)
Bit manipulate (set, reset, test, and Boolean operation)
BCD adjust, etc
I/O ports (total) 28
CMOS input 1
Timer 16 bits (TMO) 1 ch(PPG output:1,capture input:2)
8 bits (TM5) 1 ch
8 bits(TMH0, TMH1) 2 ch(PWM output:2)
Watchdog (WDT) 1 ch
Vectored interrupt
Internal sources
Reset using RESET pin
Internal reset by watchdog timer
Internal reset by power-on-clear
Internal reset by low-voltage detector
On-chip debug function Provided
Power supply voltage VDD = 4.5 to 5.5 V
Operating ambient temperature TA = –40 to +85°C
Package 32-pin plastic LQFP(7x7)

Key Applications

Simple micro wave oven, display of wall control panel of water heater and display of AV application.

Product Lineup

Document Part No

Program Memory

Operating Voltage Min
Package Code Production Packing / Lead Free Order Part No
PDF UPD79F7025GA-GBT-AT 8 512 4.5 PLQP0032GB-A
32-pin plastic
Mass production
Tray / Lead free (Pure Sn) UPD79F7025GA-GBT-AT
UPD79F7026GA-GBT-AT 16 768 UPD79F7026GA-GBT-AT
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