Datasheet

78K0/Ix2 CHAPTER 2 PIN FUNCTIONS
R01UH0010EJ0500 Rev.5.00 38
Feb 28, 2012
Table 2-5. Pin I/O Circuit Types (78K0/IB2 (32 Pins))
Pin Name I/O Circuit Type I/O Recommended Connection of Unused Pins
P00/TI000/INTP0/TOH1/
TI51
P02/SSI11/INTP5
5-AQ Input: Independently connect to V
DD or VSS via a resistor.
Output: Leave open.
ANI0/P20/AMP-
Note 1
11-P
ANI1/P21/AMPOUT
Note 1
/
PGAIN
Note 1
11-O
ANI2/P22/AMP+
Note 1
11-N
ANI3/P23/CMP2+
ANI4/P24/CMP0+
ANI5/P25/CMP1+
11-Q
ANI6/P26/CMPCOM 11-R
ANI7/P27 11-G
<Digital input setting>
Independently connect to AV
REF or AVSS via a resistor.
<Analog input setting and digital output setting>
Leave open
Note 3
.
P31/INTP2/TOX00/TOOLC1
P32/INTP3/TOX01/TOOLD1
P33/TOX10
P34/TOX11/INTP4/TOH1/
TI51
P35/SCK11
P36/SI11
5-AQ
P37/SO11 5-AG
Input: Independently connect to V
DD or VSS via a resistor.
Output: Leave open.
P60/SCLA0/TxD6
P61/SDAA0/RxD6
5-AS Input: Independently connect to V
DD or VSS via a resistor.
Output: Leave this pin open at low-level output after clearing
the output latch of the port to 0.
ANI8/P70
11-G
I/O
<Digital input setting>
Independently connect to AV
REF or AVSS via a resistor.
<Analog input setting and digital output setting>
Leave open
Note 3
.
P121/X1/TOOLC0
Note 2
/
TI000/INTP0
P122/X2/EXCLK/TOOLD0
Note 2
37-A Independently connect to V
DD or VSS via a resistor.
RESET/P125 42-A
Input
Connect directly to VDD or via a resistor.
IC0
 
Connect directly to VSS.
AVREF
 
Connect directly to VDD.
AVSS
 
Connect directly to VSS.
Notes 1.
 PD78F0755, 78F0756 (products with operational amplifier) only
2. Use recommended connection above in input port mode (refer to Figure 5-2 Format of Clock Operation
Mode Select Register (OSCCTL)) when these pins are not used.
3. If this pin is left open when specified as an analog input pin, the input voltage level might become undefined. It
is therefore recommended to leave this pin open after specifying it as a digital output pin.
Cautions 1. ANI0/P20/AMP-, ANI1/P21/AMPOUT/PGAIN, ANI2/P22/AMP+, ANI3/P23/CMP2+, ANI4/P24/CMP0+,
ANI5/P25/CMP1+, ANI6/P26/CMPCOM, ANI7/P27, and ANI8/P70 are set in the analog input mode after
release of reset.
2. Pin function of RESET/P125 is set in the external reset input after release of reset.
Remark Functions in angle brackets < > can be assigned by setting the input switch control register (MUXSEL).