UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 36

• 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

2.2.12 AV
2.2.13 AV
the same potential as the EV
2.2.14 RESET
2.2.15 REGC
pin to V
2.2.16 V
2.2.17 V
2.2.18 FLMD0
this pin to the flash programmer.
36
Connect to EV
This is the A/D converter reference voltage input pin.
When the A/D converter is not used, connect this pin directly to EV
This is the A/D converter ground potential pin. Even when the A/D converter is not used, always use this pin with
This is the active-low system reset input pin.
This is the pin for connecting regulator output (2.5 V) stabilization capacitance for internal operation. Connect this
V
EV
V
EV
This is a pin for setting flash memory programming mode.
Note Connect port 8 and port 9 directly to EV
DD
SS
Caution Keep the wiring length as short as possible for the broken-line part in the above figure.
DD
SS
is the ground potential pin for other than ports.
is the positive power supply pin for other than ports.
SS
is the ground potential pin for ports.
is the positive power supply pin for ports.
DD
SS
via a capacitor (0.47 to 1 µF: recommended).
REF
SS
and EV
and EV
SS
SS
DD
or V
SS
in the normal operation mode. In flash memory programming mode, be sure to connect
SS
pin or V
SS
pin.
CHAPTER 2 PIN FUNCTIONS
User’s Manual U17554EJ4V0UD
DD
when it is used as a digital port.
REGC
V
SS
DD
or V
DD
Note
.