73S8009C-20IM 查看數據表（PDF） - Teridian Semiconductor Corporation

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73S8009C-20IM

Versatile Power Management and Smart Card Interface IC

Teridian Semiconductor Corporation 

DS_8009C_025

73S8009C Data Sheet

Table 1 describes the pin functions for the device.

Table 1: 73S8009C Pin Definitions

Pin

Name

Pin

Pin

(QFN32) (QFN20)

Type

Equivalent

Circuit

Description

Card Interface

I/O

AUX1

AUX2

RST

22

14

IO Figure 17 Card I/O: Data signal to/from card. Includes a

pull-up resistor to VCC.

21

N/A

IO Figure 17 AUX1: Auxiliary data signal to/from card.

Includes a pull-up resistor to VCC.

20

N/A

IO Figure 17 AUX2: Auxiliary data signal to/from card.

Includes a pull-up resistor to VCC.

18

12

O Figure 16 Card reset: provides reset (RST) signal to card.

RST is the pass through signal on RSTIN.

Internal control logic will hold RST low when

card is not activated or VCC is too low.

CLK

16

10

O Figure 15 Card clock: provides clock signal (CLK) to card.

CLK is the pass through of the signal on pin

CLKIN. Internal control logic will hold CLK low

when card is not activated or VCC is too low.

PRES

PRES

14

8

I Figure 19 Card Presence switch: active high indicates

card is present. Should be tied to GND when

not used, but it Includes a high-impedance

pull-down current source.

13

N/A

I Figure 19 Card Presence switch: active low indicates

card is present. Should be tied to VDD when

not used, but it Includes a high-impedance

pull-up current source.

VCC

19

13 PSO Figure 14 Card power supply – logically controlled by

sequencer, output of LDO regulator.

Requires an external 0.47 µF low ESR filter

capacitor to GND.

GND

17

11 GND

–

Card ground.

Miscellaneous Inputs and Outputs

CLKIN

TEST1

7

6

I

10

7

–

TEST2

30

20

–

Figure 19

–

–

Clock signal source for the card clock.

Factory test pin. This pin must be tied to

GND in typical applications

Factory test pin. This pin must be tied to

GND in typical applications

Power Supply and Ground

VDD

29

19 PSO Figure 14 System interface supply voltage and supply

voltage for companion controller circuitry.

Requires a minimum of two 0.1 µF capacitors

to ground for proper decoupling.

Rev. 1.4

7

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