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TC534CPL 数据表(PDF) 5 Page - Microchip Technology

部件名 TC534CPL
功能描述  5V Precision Data Acquisition Subsystems
PDF  22 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

TC534CPL 数据表(HTML) 5 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
DS21433B-page 5
TC530/TC534
2.0
PIN DESCRIPTIONS
Thedescriptionsof the pins arelistedinTable2-1
TABLE 2-1:
PIN FUNCTION TABLE
Pin Number
(TC530)
28-Pin PDIP
Pin Number
(TC530)
28-Pin SOIC
Pin Number
(TC534)
40-Pin PDIP
Pin Number
(TC534)
44-Pin
PQFP
Symbol
Description
11
1
40
VSS
Analog output. Negative power supply converter output and
reservoir capacitor connection. This output can be used to
provide negative bias to other devices in the system.
22
2
41
CINT
Analog output. Integrator capacitor connection and
integrator output.
33
3
42
CAZ
Analog input. Auto Zero capacitor connection.
4
4
4
43
BUF
Analog output. Integrator capacitor connection and voltage
buffer output.
5
5
5
2
ACOM
Analog input. This pin is ground for all of the analog
switches in the A/D converter. It is grounded for most
applications. ACOM and the input common pin (VIN-or
CHX-) should be within the common mode range, CMR.
66
6
3
CREF-
Analog Input. Reference cap negative connection.
77
7
4
CREF+
Analog Input. Reference cap positive connection.
88
8
5
VREF-
Analog Input. External voltage reference negative connec-
tion.
99
9
6
VREF+
Analog Input. External voltage reference positive connec-
tion.
Not Used
Not Used
10
7
CH4-
Analog Input. Multiplexer channel 4 negative differential
Not Used
Not Used
11
8
CH3-
Analog Input. Multiplexer channel 3 negative differential
Not Used
Not Used
12
9
CH2-
Analog Input. Multiplexer channel 2 negative differential
Not Used
Not Used
13
10
CH1-
Analog Input. Multiplexer channel 1 negative differential
Not Used
Not Used
14
11
CH4+
Analog Input. Multiplexer channel 4 positive differential
Not Used
Not Used
15
12
CH3+
Analog Input. Multiplexer channel 3 positive differential
Not Used
Not Used
16
13
CH2+
Analog Input. Multiplexer channel 2 positive differential
Not Used
Not Used
17
14
CH1+
Analog Input. Multiplexer channel 1 positive differential
10
10
Not Used
Not Used
VN-
Analog Input. Negative differential analog voltage input.
11
11
Not Used
Not Used
VIN+
Analog Input. Positive differential analog voltage input.
12
12
18
15
DGND
Analog Input. Ground connection for serial port circuit.
Not Used
Not Used
19
16
A1
Logic Level Input. Multiplexer address MSB.
Not Used
Not Used
20
17
A0
Logic Level Input. Multiplexer address LSB.
14
14
21
18
OSCOUT Analog Input. Timebase for state machine. This pin con-
nects to one side of an AT-cut crystal having an effective
series resistance of 100
Ω (typ) and a parallel capacitance of
20pF. If an external frequency source is used to clock the
TC530/TC534 this pin must be left floating.
15
15
22
19
OSCIN
Analog Input. This pin connects to the other side of the crys-
tal described in OSCOUT above. The TC530/TC534 may
also be clocked from an external frequency source con-
nected to this pin. The external frequency source must be a
pulse wave form with a minimum 30% duty cycle and rise
and fall times 15nsec (Max). If an external frequency source
is used, OSCOUT must be left floating. A maximum operat-
ing frequency of 2MHz (crystal) or 4MHz (external clock
source) is permitted.



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