MC9S12XEG128MAA Freescale Semiconductor, MC9S12XEG128MAA Datasheet - Page 782
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MC9S12XEG128MAA
Manufacturer Part Number
MC9S12XEG128MAA
Description
MCU 16BIT 128K FLASH 80-QFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.MC9S12XEP768CAL.pdf
(1328 pages)
Specifications of MC9S12XEG128MAA
Core Processor
HCS12X
Core Size
16-Bit
Speed
50MHz
Connectivity
CAN, EBI/EMI, I²C, IrDA, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
59
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
1.72 V ~ 5.5 V
Data Converters
A/D 12x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
80-QFP
Processor Series
S12XE
Core
HCS12
Data Bus Width
16 bit
Data Ram Size
12 KB
Interface Type
CAN/SCI/SPI
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
59
Number Of Timers
25
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
KIT33812ECUEVME, EVB9S12XEP100, DEMO9S12XEP100
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 12-bit
No. Of I/o's
59
Eeprom Memory Size
2KB
Ram Memory Size
12KB
Cpu Speed
50MHz
No. Of Timers
3
No. Of Pwm Channels
8
Digital Ic Case Style
QFP
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Chapter 21 Serial Peripheral Interface (S12SPIV5)
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.
782
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
•
•
End of Idle State
SCK Edge Number
SCK (CPOL = 0)
SCK (CPOL = 1)
SAMPLE I
MOSI/MISO
CHANGE O
CHANGE O
SEL SS (O)
Master only
SEL SS (I)
MOSI pin
MISO pin
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.
Figure 21-14. SPI Clock Format 1 (CPHA = 1), with 8-Bit Transfer Width selected (XFRW = 0)
MSB first (LSBFE = 0):
t
t
t
LSB first (LSBFE = 1):
L
T
I
1
= Minimum idling time between transfers (minimum SS high time), not required for back-to-back transfers
= Minimum leading time before the first SCK edge, not required for back-to-back transfers
= Minimum trailing time after the last SCK edge
SCK edges:
shows two clocking variations for CPHA = 1. The diagram may be interpreted as a master or
t
L
1
MSB
LSB
2
MC9S12XE-Family Reference Manual , Rev. 1.23
3
Begin
Bit 6
Bit 1
4
1
edges on the SCK line with data being latched on even numbered
5
Bit 5
Bit 2
6
7
Bit 4
Bit 3
8
Transfer
9
Bit 3
Bit 4
10
11
Bit 2
Bit 5
12
13 14
Bit 1
Bit 6
End
15
MSB
LSB
16
t
T
Minimum 1/2 SCK
Freescale Semiconductor
Begin of Idle State
t
I
for t
T
t
L
, t
l
, t
L
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