upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 27

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
Notes 1. When writing the flash memory with a flash memory programmer, connect P31/INTP2/OCD1A as follows.
P00/TI000
P01/TI010/TO00
P10/SCK10
P11/SI10
P12/SO10
P13/TxD6
P14/RxD6
P15
P16/TOH1
P17/TI50/TO50
P30/INTP1
P31/INTP2/OCD1A
P32/INTP3/OCD1B
P33/TI51/TO51
P60
P61
P121/X1/OCD0A
P122/X2/EXCLK/OCD0B
USBM
USBP
USBPUC
FLMD0
RESET
Table 2-2 shows the types of pin I/O circuits and the recommended connections of unused pins.
See Figure 2-1 for the configuration of the I/O circuit of each type.
2. When writing the flash memory with a flash memory programmer, connect P121/X1/OCD0A as follows.
3. Use recommended connection above in I/O port mode (see Figure 5-2 Format of Clock Operation Mode
4. FLMD0 is a pin that is used to write data to the flash memory. To rewrite the data of the flash memory on-
Pin Name
• P31/INTP2/OCD1A: Connect to EV
The above connection is not necessary when writing the flash memory by means of self programming.
• P121/X1/OCD0A: When using this pin as a port, connect it to V
the input mode) or leave it open (in the output mode).
The above connection is not necessary when writing the flash memory by means of self programming.
Select Register (OSCCTL)) when these pins are not used.
board, connect this pin to V
Note 2, 3
Note 1
Note 3
3-C
5-AH
5-AG
5-AH
5-AG
5-AH
13-AD
37
24-A
24-A
38
2
I/O Circuit Type
SS
via a resistor (10 kΩ: recommended).
Preliminary User’s Manual U19014EJ1V0UD
Table 2-2. Pin I/O Circuit Types
CHAPTER 2 PIN FUNCTIONS
SS
I/O
Output
Input
via a resistor (10 kΩ: recommended).
I/O
−
Input:
Output: Leave open.
Input:
Output: Leave this pin open at low-level output after clearing
Input:
Output: Leave open.
Connect to EV
Leave open.
Connect to EV
Connect directly to V
Independently connect to EV
Connect to EV
the output latch of the port to 0.
Independently connect to V
Recommended Connection of Unused Pins
SS
SS
.
or V
SS
DD
SS
via a resistor (10 kΩ: recommended) (in
.
or via a resistor.
SS
Note 4
.
DD
DD
or V
or EV
SS
via a resistor.
SS
via a resistor.
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