33977 Просмотр технического описания (PDF) - Freescale Semiconductor
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33977 Datasheet PDF : 37 Pages
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PIN CONNECTIONS
PIN CONNECTIONS
COS+
COS-
SIN+
SIN-
GND
GND
GND
GND
CS
SCLK
SO
SI
NC
NC
NC
NC
GND
GND
GND
GND
VPWR
RST
VDD
RTZ
Figure 3. 33977 Pin Connections
Table 1. 33977 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning onpage 10.
Pin
Pin Name Pin Function Formal Name
Definition
1
2
3
4
5 to 8,
17 to 20
9
(MS Motor
Pin #)
COS+ (MS #4)
COS- (MS #3)
SIN+ (MS #1)
SIN- (MS #2)
GND
CS
Output
N/A
Input
10
SCLK
Input
11
SO
Output
12
SI
Input
13
RTZ
Multiplexed
Output
14
VDD
Input
15
RST
Input
16
21, 22, 23, 24
VPWR
NC
Input
–
H-Bridge Outputs 0
Ground
Chip Select
Serial Clock
Serial Output
Serial Input
Return to Zero
Voltage
Reset
Battery Voltage
No Connect
Each pin is the output of a half-bridge, designed to source or sink current.
Ground pins
This pin is connected to a chip select output of a Large Scale Integration
(LSI) Master IC and controls which device is addressed.
This pin is connected to the SCLK pin of the master device and acts as a
bit clock for the SPI port.
This pin is connected to the SPI Serial Data Input pin of the Master device
or to the SI pin of the next device in a daisy chain.
This pin is connected to the SPI Serial Data Output pin of the Master
device from which it receives output command data.
This is a multiplexed output pin for the non-driven coil, during a Return to
Zero (RTZ) event.
This SPI and logic power supply input will work with 5.0 V supplies.
This pin is connected to the Master and is used to reset the device, or
place it into a sleep state by driving it to Logic [1]. When this pin is driven
to Logic [0], all internal logic is forced to the default state. This input has
an internal active pull-up.
Power supply
These pins are not connected to any internal circuitry, or any other pin,
and may be connected to the board where convenient.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33977
3
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