MC34921 Datasheet, PDF (4/36 Pages) List of Unclassifed Manufacturers – Configurable Motor Driver IC with Power Supplies

TERMINAL CONNECTIONS
Table 1. Terminal Function Description (continued)
A functional description of each terminal can be found in the Functional Terminal Description section beginning on page 18
Terminal
Terminal Name
Formal Name
Definition
10
11
12
13
14, 15
18, 19
22
23
26
27
30, 31
34, 35
36
37
38
39
42
43
44
45
46
47
50
51
52
53
3.3 V SWITCH
3.3 V Switching
Regulator Switch
Output
3.3 V regulator switching output.
3.3 V
3.3 V Regulator
Feedback
Feedback terminal for 3.3 V switching regulator and internal logic supply.
VCORE SUPPLY
Core Voltage
Regulator Input
Core regulator input supply.
VCORE
Core Voltage
Regulator Output
Core regulator output voltage.
ADCMA
DC Motor A Output A ^{DC motor driver A output A.}
ADCMB
DC Motor A Output B ^{DC motor driver A output B.}
VBOOST
Boost Voltage
Boost voltage storage node.
CP2
Switching Capacitor 2 ^{Charge pump capacitor connection 2.}
CP1
Switching Capacitor 1 ^{Charge pump capacitor connection 1.}
GATEOUT
High-Side MOSFET ^{Gate driver for external N-channel switch.}
Gate Driver
BDCMB
DC Motor B Output B ^{DC motor driver B output B.}
BDCMA
DC Motor B Output A ^{DC motor driver B output A.}
5 V SELECT
5.0 V Regulator Mode ^{5.0 V regulator operating mode select.}
Select
5 V SWITCH
5.0 V Switching
Regulator Switch
Output
5.0 V switching regulator switching output.
5 V SUPPLY
5.0 V Regulator Input ^{5.0 V regulator input voltage.}
Supply
5V
5.0 V Regulator
5.0 V regulator feedback.
Feedback
AN0/ANALOGOUT_A AN0/Analogout_A ^{A/D input 0 or analog encoder output A.}
AN1/ANALOGOUT_B AN1/Analogout_B ^{A/D input 1 or analog encoder output B.}
AN2/ANALOGIN_A
AN2/Analogin_A ^{A/D input 2 or analog encoder input A.}
AN3/ANALOGIN_B
AN3/Analogin_B ^{A/D input 3 or analog encoder input B.}
ENC_FILTB
Analog Encoder
Channel B Filter
I/V amplifier channel B filter.
ENC_FILTA
Analog Encoder
Channel A Filter
I/V amplifier channel A filter.
RST
Reset
Reset input and output.
MISO
Master In Slave Out Serial data out to MCU.
MOSI
Master Out Slave In Serial data in from MCU.
SCLK
Serial Clock
Serial data clock.
34921
4
Analog Integrated Circuit Device Data
Freescale Semiconductor