S9S12GA240F0MLL Freescale Semiconductor, S9S12GA240F0MLL Datasheet - Page 722
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S9S12GA240F0MLL
Manufacturer Part Number
S9S12GA240F0MLL
Description
16-bit Microcontrollers - MCU 16BIT 240KB FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S12G96F0CLL.pdf
(1292 pages)
Specifications of S9S12GA240F0MLL
Rohs
yes
Core
S12
Processor Series
MC9S12G
Data Bus Width
16 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
240 KB
Data Ram Size
4 KB
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-100
Mounting Style
SMD/SMT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S9S12GA240F0MLL
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Serial Peripheral Interface (S12SPIV5)
A half SCK cycle later, the second edge appears on the SCK pin. This is the latching edge for both the
master and slave.
When the third edge occurs, the value previously latched from the serial data input pin is shifted into the
LSB or MSB of the SPI shift register, depending on LSBFE bit. After this edge, the next bit of the master
data is coupled out of the serial data output pin of the master to the serial input pin on the slave.
This process continues for a total of n
edges and shifting taking place on odd numbered edges.
Data reception is double buffered, data is serially shifted into the SPI shift register during the transfer and
is transferred to the parallel SPI data register after the last bit is shifted in.
After 2n
Figure 21-14
slave timing diagram because the SCK, MISO, and MOSI pins are connected directly between the master
and the slave. The MISO signal is the output from the slave, and the MOSI signal is the output from the
master. The SS line is the slave select input to the slave. The SS pin of the master must be either high or
reconfigured as a general-purpose output not affecting the SPI.
724
•
•
Data that was previously in the SPI data register of the master is now in the data register of the
slave, and data that was in the data register of the slave is in the master.
The SPIF flag bit in SPISR is set indicating that the transfer is complete.
1
SCK edges:
shows two clocking variations for CPHA = 1. The diagram may be interpreted as a master or
MC9S12G Family Reference Manual,
1
edges on the SCK line with data being latched on even numbered
Rev.1.23
Freescale Semiconductor
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