TC530CKW データシートの表示（PDF） - TelCom Semiconductor, Inc

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TC530CKW

5V PRECISION DATA ACQUISITION SUBSYSTEMS

TelCom Semiconductor, Inc 

5V PRECISION DATA ACQUISITION

SUBSYSTEMS

1

TC530

TC534

PIN DESCRIPTION (Cont.)

Pin No. Pin No. Pin No Pin No.

2

(TC530 (TC530 (TC534 (TC534

28-Pin

28-Pin 40-Pin 44-Pin

PDIP, 300 Mil.) SOIC) PDIP) PQFP) Symbol Description

22

23

25

26

27

28

13, 24

22

32

30

VCCD Analog Input. Power supply connection for digital logic and

serial port. Proper power-up sequencing is critical, see the

Applications section.

23

34

32

OSC

Input. The negative power supply converter normally runs at

a frequency of 100kHz. This frequency can be slowed down to

3

reduce quiescent current by connecting an external capacitor

between this pin and VS+. (See Typical Characteristics).

25

37

35

VDD

Analog Input. Power supply connection for the A/D analog

section and DC-DC converter. Proper power-up sequencing is

critical, see the Applications section.

26

38

27

39

28

40

36

CAP+ Analog Input. Storage capacitor positive connection for the

DC/DC converter.

37

AGND Analog Input. Ground connection for DC/DC converter.

4

38

CAP– Analog Input. Storage capacitor negative connection for the

DC/DC converter.

13, 24 28, 29, 31, 1, 25, 26, 27 NC

33, 35, 36 29, 31, 33,

34, 39, 44,

No connect. Do not connect any signal to these pins.

R/W

EOC

DOUT

DCLK

R/W

READ TIMING

tRS

tRD

tDRS

tPWL

R/W

DIN

DCLK

WRITE TIMING

tLS

tDLS tPWL

READ FORMAT

WRITE DEFAULT TIMING

R/W

DIN

tLDL

tLDS

5

6

EOC

DOUT

EOC OVR SGN MSB

LSB

DCLK

R/W

WRITE FORMAT

7

DOUT

MSB

LSB

DCLK

For Polled vs Interrupt Operation and Write Value Modified Cycle Use TC520A Data Sheet Figure 1 & 2.

Figure 1. Serial Port Timing

TELCOM SEMICONDUCTOR, INC.

8

3-53

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