DS_8024C_023

73S8024C Data Sheet

Rev. 1.3

3

Table of Contents

1

Pin Description.................................................................................................................................... 4

1.1 Card Interface ............................................................................................................................... 4

1.2 Miscellaneous Inputs and Outputs................................................................................................ 4

1.3 Power supply and ground ............................................................................................................. 4

1.4 Microcontroller Interface ............................................................................................................... 5

2

System Controller Interface ............................................................................................................... 6

3

Oscillator.............................................................................................................................................. 6

4

DC-DC Converter – Card Power Supply ........................................................................................... 7

5

Over-temperature Monitor.................................................................................................................. 7

6

Voltage Supervision ........................................................................................................................... 8

7

Power Down......................................................................................................................................... 8

8

Activation Sequence........................................................................................................................... 9

9

Deactivation Sequence..................................................................................................................... 10

10

OFF and Fault Detection .................................................................................................................. 11

11

I/O Circuitry and Timing ................................................................................................................... 12

12

Typical Application Schematic ........................................................................................................ 13

13

Electrical Specification..................................................................................................................... 14

13.1 Absolute Maximum Ratings ........................................................................................................ 14

13.2 Recommended Operating Conditions......................................................................................... 14

13.3 Card Interface Characteristics .................................................................................................... 15

13.4 Digital Signals ............................................................................................................................. 18

13.5 DC Characteristics ...................................................................................................................... 18

13.6 Voltage / Temperature Fault Detection Circuits.......................................................................... 18

14

Mechanical Drawings (28-SO).......................................................................................................... 19

15

Package Pin Designation (28-SO) ................................................................................................... 20

16

Ordering Information ........................................................................................................................ 21

17

Related Documentation.................................................................................................................... 21

18

Contact Information.......................................................................................................................... 21

Revision History........................................................................................................................................ 22

Figures

Figure 1: 73S8024C Block Diagram ............................................................................................................. 2

Figure 2: Power Down Mode Operation........................................................................................................ 9

Figure 3: Activation Sequence – RSTIN low when

CMDVCC goes low....................................................... 9

Figure 4: Activation Sequence – RSTIN high when

CMDVCC goes low ................................................... 10

Figure 5: Deactivation Sequence ............................................................................................................... 11

Figure 6: Timing Diagram – Management of the Interrupt Line

OFF.......................................................... 11

Figure 7: I/O and I/OUC State Diagram ...................................................................................................... 12

Figure 8: I/O – I/OUC Delays: Timing Diagram........................................................................................... 12

Figure 9: 73S8024C Typical Application Schematic ................................................................................... 13

Figure 10: DC – DC Converter efficiency (VCC = 5 V) ................................................................................ 16

Figure 11: DC – DC Converter Efficiency (VCC = 3 V) ................................................................................ 16

Figure 12: 28 Lead SO................................................................................................................................ 19

Table

Table 1: Choice of VCC Pin Capacitor.......................................................................................................... 7