07XSC200 datasheet(26/51 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

07XSC200

Functional Device Operation

5.1

SPI Protocol Description

The SPI interface has a full duplex, three-wire synchronous data transfer with four I/O lines associated with it: Serial Input (SI),

Serial Output (SO), Serial Clock (SCLK), and Chip Select (CSB).

The SI/SO pins of the 07XSC200 follow a first-in first-out (D15 to D0) protocol, with both input and output words transferring the

most significant bit (MSB) first. All inputs are compatible with 5.0 or 3.3 V CMOS logic levels.

Figure 10. Single 16-Bit Word SPI Communication

5.2

Operational Modes

The 07XSC200 has four operating modes: Sleep, Normal, Fail-safe and Fault. Table 5 and Figure 12 summarize details

contained in succeeding paragraphs.

The Figure 11 describes an internal signal called IN_ON[x] depending on IN[x] input.

Figure 11. IN_ON[x] internal signal

The 07XSC200 transits to operating modes according to the following signals:

• wake-up = RSTB or WAKE or IN_ON[0] or IN_ON[1] or CLOCK_ON,

• fail = (VDD Failure and VDD_FAIL_en) or (Watchdog time-out and FSI input not shorted to ground),

• fault = OC[0:1] or OT[0:1] or SC[0:1] or UV or (OV and OV_dis).

CSB

SCLK

D15

D14

D13

D12

D11

D10

OD12

OD13

OD14

OD15

OD6

OD7

OD8

OD9

OD10

OD11

OD1

OD2

OD3

OD4

OD5

RSTB is in a logic H state during the above operation.

DO, D1, D2, ... , and D15 relate to the most recent ordered entry of program data into the LUX IC

NOTES:

OD0

CSB

device.

1. RSTB is a logic [1] state during the above operation.

2. D15

:D0 relate to the most recent ordered entry of data into the device.

3. OD15

:OD0 relate to the first 16 bits of ordered fault and status data out of the device.

Notes

IN_ON[x]

IN[x]

tIN

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