TA1218N/F
2000-09-11 10/40
Pin
No.
Name Function
Interface
21
(18)
I/O3
This is an ADC input/DAC output
pin.
The ADC is a 2-level detection type
(1 bit). The threshold level is 2.25 V.
The DAC (1 bit) is an open-collector
output. Make sure that the current
flowing into this pin is 2.0 mA or
less.
22
(19)
O4
This pin is for a 1 bit DAC output.
This is an open-collector output.
Make sure that the current flowing
into this pin is 2.0 mA or less.
23
(21)
GND
This is the GND pin.
24
(22)
SCL
This pin is for input an I
2
C bus clock.
The input threshold level of this pin
is 2.25 V.
25
(23)
SDA
This is an I
2
C bus data input/output
pin. The input threshold level of this
pin is 2.25 V.
Make sure that the current flowing
into this pin is 3.0 mA or less.
21
2.
25 V
Logic
(18)
22
Logic
(19)
2.
25 V
24
Logic
Surge
protection
circuit
(22)
25
2.
25 V
Logic
Surge
protection
circuit
(25)
