MC9S08GT16CFB Freescale Semiconductor, MC9S08GT16CFB Datasheet - Page 189
MC9S08GT16CFB
Manufacturer Part Number
MC9S08GT16CFB
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S08GT16CFB.pdf
(290 pages)
Specifications of MC9S08GT16CFB
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
20MHz
Interface Type
SCI/SPI
Program Memory Type
Flash
Program Memory Size
16KB
Total Internal Ram Size
1KB
# I/os (max)
36
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
2.08V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
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12.1
Features of the SPI module include:
12.2
This section includes block diagrams showing SPI system connections, the internal organization of the SPI
module, and the SPI clock dividers that control the master mode bit rate.
12.2.1
Figure 12-2
device initiates all SPI data transfers. During a transfer, the master shifts data out (on the MOSI1 pin) to
the slave while simultaneously shifting data in (on the MISO1 pin) from the slave. The transfer effectively
exchanges the data that was in the SPI shift registers of the two SPI systems. The SPSCK1 signal is a clock
output from the master and an input to the slave. The slave device must be selected by a low level on the
slave select input (SS1 pin). In this system, the master device has configured its SS1 pin as an optional
slave select output.
Freescale Semiconductor
•
•
•
•
•
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Master or slave mode operation
Full-duplex or single-wire bidirectional option
Programmable transmit bit rate
Double-buffered transmit and receive
Serial clock phase and polarity options
Slave select output
Selectable MSB-first or LSB-first shifting
7
Features
Block Diagrams
SPI System Block Diagram
6
shows the SPI modules of two MCUs connected in a master-slave arrangement. The master
5
GENERATOR
SPI SHIFTER
MASTER
CLOCK
4
3
2
1
0
Figure 12-2. SPI System Connections
MC9S08GB/GT Data Sheet, Rev. 2.3
MOSI1
MISO1
SPSCK1
SS1
SPSCK1
MOSI1
MISO1
SS1
7
SLAVE
6
5
SPI SHIFTER
4
3
2
1
0
Features
189
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