78F9177 PDF – 8-Bit Single-Chip Microcontroller

What is 78F9177?

This is 8-Bit, Microcontroller. Microcontrollers are integrated circuits that contain a central processing unit (CPU), memory, and various input/output peripherals on a single chip. They are commonly used in embedded systems for control and communication purposes.

The partnumber is UPD78F9177.

The Package is 44-pin plastic LQFP (10 × 10), 44-pin plastic QFP (fine pitch) (7 × 7).

The function of this semiconductor is 8-Bit Single-Chip Microcontroller.

Manufacturer: NEC


78F9177 Microcontroller


The 78F9177 and µPD78F9177Y are µPD789177, 789177Y Subseries (small, general-purpose) in the 78K/0S Series. The µPD78F9177 replaces the internal ROM of the µPD789176 and µPD789177 with flash memory, while the µPD78F9177Y replaces the ROM of the µPD789176Y and µPD789177Y with flash memory. Because flash memory allows the program to be written and erased electrically with the device mounted on the board, this product is ideal for the evolution stages of system development, small-scale production and rapid development of new products.

The microcontroller also has a variety of input/output peripherals, including timers, serial interfaces, analog-to-digital converters, and digital-to-analog converters.


78F9177 pinout


1. Pin compatible with mask ROM version (except VPP pin)
2. Flash memory: 24 Kbytes
3. High-speed RAM: 512 bytes
4. Minimum instruction execution time can be changed from high-speed (0.4 µs: @5.0-MHz operation with main system clock) to ultra-low-speed (122 µs: @ 32.768-kHz operation with subsystem clock)
5. 10-bit resolution A/D converter: 8 channels
6. I/O ports: 31
7. Timers: 6 channels
(1) 16-bit timer: 1 channel
(2) 8-bit timer/event counter: 2 channels
(3) 8-bit timer: 1 channel
(4) Watch timer: 1 channel
(5) Watchdog timer: 1 channel
8. On-chip 16-bit multiplier
9. Power supply voltage: VDD = 1.8 to 5.5 V

The 78F9177 microcontroller is a powerful and flexible component that provides control and communication capabilities in embedded systems. Its high-performance and low-power features make it a popular choice for a variety of applications.

Ordering Information:

µPD78F9177GB-8ES, µPD78F9177YGB-8ES, µPD78F9177YGA-9EU

78F9177 Datasheet

EM78P156NPJ Datasheet PDF – 8-Bit Microcontroller

Part Number: EM78P156NPJ, EM78P156

Function: 8-Bit Microcontroller with OTP ROM

Package: DIP 18 Pin Type

Manufacturer: Elan Microelectronics Corp


EM78P156NPJ datasheet



The EM78P156NPJ is an 8 -bit microprocessor designed and developed with low -power, high-speed CMOS technology. It is equipped with 1K*13 -bits Electrical One Time Programmable Read Only Memory (OTP – ROM). It provides three PROTECTION bit to prevent user’s code in the OTP memory from being int ruded. 8 OPTION bits are also available to meet user’s requirements.

With its OTP- ROM feature, the EM78P156N is able to offer a convenient way of developing and verifying user’s programs. Moreover, user can take advantage of EMC Writer to easily program h is development code.


1. Low power consumption:
(1) Less then 2 mA at 5V/4MHz
(2) Typically 20 μA at 3V/32KHz
(3) Typically 1 μA during sleep mode

2. 1K × 13 bits on chip ROM

3. One security register to prevent intrusion of OTP memory codes

4. One configuration register to accommodate user’s requirements

5. 48× 8 bits on chip registers (SRAM, general purpose register)

6. 2 bi-directional I/O ports

7. 5 level stacks for subroutine nesting


Other data sheets are available within the file:

78P156, EM78P156, EM78P156N, EM78P156N-XT, EM78P156NM, EM78P156NAS


EM78P156NPJ Datasheet PDF

EM78P156NPJ pdf