UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 267

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

18.3 Functional Outline
memory programmer, regardless of whether the 78K0S/KA1+ has already been mounted on the target system or not
(on-board/off-board programming).
when it is assumed that the program is changed after production/shipment of the target system, is provided.
supported, so that the program cannot be changed by an unauthorized person.
On-board programming
Off-board programming
Self programming
The internal flash memory of the 78K0S/KA1+ can be rewritten by using the rewrite function of the dedicated flash
The function for rewriting a program with the user program (self programming), which is ideal for an application
Refer to Table 18-1 for the flash memory writing control function.
In addition, a security function that prohibits rewriting the user program written to the internal flash memory is also
Refer to 18.7.3 Security settings for details on the security function.
Remarks 1. The FA series is a product of Naito Densei Machida Mfg. Co., Ltd.
Rewrite Method
2.
Refer to the following sections for details on the flash memory writing control function.
• 18.7 On-Board and Off-Board Flash Memory Programming
• 18.8 Flash Memory Programming by Self Programming
Flash memory can be rewritten after the device is mounted on the
target system, by using a dedicated flash memory programmer.
Flash memory can be rewritten before the device is mounted on the
target system, by using a dedicated flash memory programmer and a
dedicated program adapter board (FA series).
Flash memory can be rewritten by executing a user program that has
been written to the flash memory in advance by means of on-board/off-
board programming.
CHAPTER 18 FLASH MEMORY
Table 18-1. Rewrite Method
User’s Manual U16898EJ5V0UD
Functional Outline
Flash memory
programming mode
Self programming mode
Operation Mode
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