ST95HF datasheet(7/93 Pages) STMICROELECTRONICS

7 / 93 page

DocID025630 Rev 4

7/93

ST95HF

List of figures

Figure 1.

ST95HF application overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 2.

ST95HF block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 3.

ST95HF pinout description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 4.

ST95HF initialization and operating state change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 5.

Power-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 6.

Sending command to ST95HF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 7.

Polling the ST95HF until it is ready . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 8.

Reading data from ST95HF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 9.

Reset the ST95HF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10.

Long frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 11.

Data transfer (in both command and response) when Parity Framing mode is enabled . . 30

Figure 12.

SPI timing diagram (Slave mode and CPOL = 0, CPHA = 0) . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 13.

SPI timing diagram (Slave mode and CPOL = 1, CPHA = 1) . . . . . . . . . . . . . . . . . . . . . . . 56

Figure 14.

Typical application with a 27.12 MHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 15.

VFQFPN32 - 32-pin, 5x5 mm, 0.5 mm pitch very thin profile fine pitch

quad flat package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Figure 16.

VFQFPN32 - 32-pin, 5x5 mm, 0.5 mm pitch very thin profile fine pitch

quad flat package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

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