UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 607

• 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

24.6 Connection of Pins on Board
provided on the target system. First provide a function that selects the normal operation mode or flash memory
programming mode on the board.
the same status as immediately after reset. Therefore, if the external device does not recognize the state immediately
after reset, the pins must be handled as described below.
24.6.1 FLMD0 pin
write voltage is supplied to the FLMD0 pin. An FLMD0 pin connection example is shown below.
24.6.2 Serial interface pins
device on the board, care must be exercised so that signals do not collide or that the other device does not
malfunction.
To write the flash memory on-board, connectors that connect the dedicated flash memory programmer must be
When the flash memory programming mode is set, all the pins not used for programming the flash memory are in
In the normal operation mode, 0 V is input to the FLMD0 pin. In the flash memory programming mode, the V
The pins used by each serial interface are listed below.
To connect the dedicated flash memory programmer to the pins of a serial interface that is connected to another
CSI10
UART60
78K0/FE2
FLMD0
Table 24-5. Pins Used by Each Serial Interface
Figure 24-8. FLMD0 Pin Connection Example
Serial Interface
CHAPTER 24 FLASH MEMORY
User’s Manual U17554EJ4V0UD
10 k (recommended)
Dedicated flash memory programmer
connection pin
SO10, SI10, SCK10
TxD60, RxD60
Pins Used
607
DD