MM912F634DV1AER2 Freescale Semiconductor, MM912F634DV1AER2 Datasheet - Page 328
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
MM912F634DV1AER2
Manufacturer Part Number
MM912F634DV1AER2
Description
16-bit Microcontrollers - MCU DUAL LS/HS SWITCH W. LIN
Manufacturer
Freescale Semiconductor
Datasheet
1.MM912G634DV1AE.pdf
(338 pages)
Specifications of MM912F634DV1AER2
Rohs
yes
Core
HCS12
Processor Series
MM912F634
Data Bus Width
16 bit
Maximum Clock Frequency
20 MHz
Program Memory Size
32 KB
Data Ram Size
2 KB
On-chip Adc
Yes
Operating Supply Voltage
4.5 V to 5.5 V
Operating Temperature Range
- 40 C to + 105 C
Package / Case
LQFP-48
Mounting Style
SMD/SMT
A/d Bit Size
10 bit
A/d Channels Available
15
Interface Type
SPI
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
6
Number Of Timers
1
Program Memory Type
Flash
Supply Voltage - Max
4.5 V
Supply Voltage - Min
4.5 V
- Current page: 328 of 338
- Download datasheet (3Mb)
Functional Description and Application Information
When the preselection bits are 001, the divisor determined by the selection bits is multiplied by 2. When the preselection bits are
010, the divisor is multiplied by 3, etc. See
clock. The two sets of selects allows the clock to be divided by a non-power of two to achieve other baud rates such as divide by
6, divide by 10, etc.
The baud rate generator is activated only when the SPI is in master mode and a serial transfer is taking place. In the other cases,
the divider is disabled to decrease I
4.38.4.5
4.38.4.5.1
The SS output feature automatically drives the SS pin low during transmission to select external devices and drives it high during
idle to deselect external devices. When SS output is selected, the SS output pin is connected to the SS input pin of the external
device.
The SS output is available only in master mode during normal SPI operation by asserting SSOE and MODFEN bit as shown in
Table
The mode fault feature is disabled while SS output is enabled.
4.38.4.5.2
The bidirectional mode is selected when the SPC0 bit is set in SPI control register 2 (see
only one serial data pin for the interface with external device(s). The MSTR bit decides which pin to use. The MOSI pin becomes
the serial data I/O (MOMI) pin for the master mode, and the MISO pin becomes serial data I/O (SISO) pin for the slave mode.
The MISO pin in master mode and MOSI pin in slave mode are not used by the SPI.
Freescale Semiconductor
403.
Special Features
SS Output
Care must be taken when using the SS output feature in a multi master system because the
mode fault feature is not available for detecting system errors between masters.
Bidirectional Mode (MOMI or SISO)
In bidirectional master mode, with mode fault enabled, both MISO and MOSI data pins can
be occupied by the SPI, though MOSI is normally used for transmissions in bidirectional
mode, and MISO is not used by the SPI. If a mode fault occurs, the SPI is automatically
switched to slave mode. In this case, MISO becomes occupied by the SPI and MOSI is not
used. This must be considered if the MISO pin is used for another purpose.
DD
current.
Table 409
for baud rate calculations for all bit conditions, based on a 20 MHz bus
NOTE
NOTE
Serial Peripheral Interface (S12SPIV4)
Table
413). In this mode, the SPI uses
MM912F634
328
Related parts for MM912F634DV1AER2
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![mm912f634](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Mm912f634 - Integrated S12 Based Relay Driver With Lin
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MM912F634BC1AE](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BC1AER2](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BC2AE](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BC2AER2](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BC3AE](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BC3AER2](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BV2AE](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BV2AER2](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BV3AE](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MM912F634BV3AER2](/photos/39/70/397085/mm908_tmb.jpg)
Part Number:
Description:
DUAL LS/HS SWITCH W. LIN
Manufacturer:
Freescale Semiconductor
![MC14560BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC12034AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MPIC2112P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14520BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: