33389 datasheet(28/49 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33389

FUNCTIONAL DEVICE OPERATION

OPERATIONAL MODES

Figure 14. State Machine Legend

1. V1 Low = V1 below reset threshold

2. V1 High = V1 above reset threshold

3. W/D: Trigger = SCWR register write operation during Normal Request mode

4. W/D: Time-out = SWCR register not written before W/D time-out period expired, or W/D written in incorrect time window.

In normal request mode time out is 75ms

5. SPI: Sleep = SPI write command to MCR and MCVR registers, data sleep

6. SPI: Normal = SPI write command to MCR and MCVR registers, data normal

7. SPI: Stand-by = SPI write command to MCR and MCVR registers, data stand-by

8. Wake-Up = one of the following events occur: CAN wake-up, Forced wake-up, Cyclic sense wake-up, Direct LX wake-

up, or SPI CS wake-up

9. V1Low > 100 ms = V1 below reset threshold for more than 100 ms

a. This condition leads to SBC in Sleep mode only for the 33389ADW (SO28 package)

b. V1 Low for > 100 ms does not lead to Sleep mode for the 33389CDW (SO28WB package) and for the 33389CDH

(HSOP20 package)

33389 Datasheet(PDF) 28 Page - Freescale Semiconductor, Inc