908E625 Datasheet, PDF (31/48 Pages) Freescale Semiconductor, Inc – Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication

FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
SPI:
AWDCC = 1
GS = 1
STOP
No
IRQ?
Yes
SPI:
Reason for Wakeup
SPI Command
STOP
MREG
No
AWD
Timer Overflow?
Yes
Switch on
Selected Hallport
Wait 40 µs
Operate
Assert IRQ_A
Yes
Hallport = 1
No
MREG = Main Voltage
Regulator
Switch off
Selected Hallport
Figure 16. Hall-Effect Sensor Input Terminal Cyclic Check Wake-Up Feature
HALL-EFFECT SENSOR INPUT TERMINAL
CONTROL REGISTER (HACTL)
Register Name and Address: HACTL - $08
Bits 7
6
5
4
3
2
1
0
Read 0
0
0
0
0
H3EN H2EN H1EN
Write
Reset 0
0
0
0
0
0
0
0
Hall-Effect Sensor Input Terminal Enable Bits
(H3EN : H1EN )
These read/write bits enable the Hall-effect sensor input
terminals. Reset clears the H3EN:H1EN bits.
• 1 = Hall-effect sensor input terminal Hx switched on and
sensed
Analog Integrated Circuit Device Data
Freescale Semiconductor
• 0 = Hall-effect sensor input terminal Hx disabled
HALL-EFFECT SENSOR INPUT TERMINAL
STATUS REGISTER (HASTAT)
Register Name and Address: HASTAT - $09
Bits 7
6
5
4
3
2
1
0
Read 0
0
0
0
0 H3F H2F H1F
Write
Reset 0
0
0
0
0
0
0
0
Hall-Effect Sensor Input Terminal Flag Bits (H3F:H1F)
These read-only flag bits reflect the input Hx while the Hall-
effect sensor input terminal Hx is enabled (HxEN = 1). Reset
clears the H3F:H1F bits.
908E625
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