UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 38

• 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

38
Notes 1. P80/ANI0 to P87/ANI7 and P90/ANI8 to P93/ANI11 are set in the analog input mode
P80/ANI0 to P87/ANI7
P90/ANI8 to P93/ANI11
P120/INTP0/EXLVI
P121/X1
P122/X2/EXCLK
P123/XT1
P124/XT2/EXCLKS
P130
P131/TI003
P132/TI013/TO03
RESET
AV
AV
FLMD0
REF
SS
2. Use the recommended connection above in I/O port mode (see Figure 6-6 Format
3. Connect P121/X1 as follows when writing the flash memory with a flash programmer.
4. Connect port 8 and port 9 directly to EV
Note 2, 3
Note 2
after release of reset.
of Clock Operation Mode Select Register (OSCCTL)) when these pins are not
used.
- P121/X1: When using this pin as a port, connect it to V
The above connection is not necessary when writing the flash memory by means of
self programming.
Pin Name
recommended) (in the input mode) or leave it open (in the output mode).
Note 2
Note 2
Note 1
Note 1
Table 2-4. Pin I/O Circuit Types (2/2)
11-G
5-AH
37
3-C
5-AH
2
−
CHAPTER 2 PIN FUNCTIONS
I/O Circuit
User’s Manual U17554EJ4V0UD
Type
I/O
I/O
I/O
Output
I/O
Input
−
I/O
DD
when it is used as a digital port.
<Analog setting>
Connect to AV
<Digital setting>
Input: Independently connect to EV
EV
Output: Leave open.
Input:
EV
Output: Leave open.
Input:
EV
Output: Leave open.
Leave open.
Input:
EV
Output: Leave open.
Connect to EV
Connect directly to EV
Connect directly to EV
Connect to EV
Recommended Connection of Unused Pins
SS
SS
SS
SS
via a resistor.
via a resistor.
via a resistor.
via a resistor.
Independently connect to EV
Independently connect to EV
Independently connect to EV
REF
DD
SS
or V
or V
or AV
SS
SS
via a resistor (10 kΩ:
DD
DD
SS
.
.
SS
or V
or V
.
SS
DD
.
Note 4
.
DD
DD
DD
DD
or
or
or
or