S912XEP100J5VAGR Freescale Semiconductor, S912XEP100J5VAGR Datasheet - Page 773

• Manufacturer Part Number: S912XEP100J5VAGR
• Description: 16-bit Microcontrollers - MCU 16-bit 1000K Flash
• Manufacturer: Freescale Semiconductor

Specifications of S912XEP100J5VAGR

• Rohs: yes
• Core: HCS12X
• Processor Series: MC9S12
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 1000 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.3 V to 5 V
• Operating Temperature Range: - 40 C to + 125 C
• Package / Case: LQFP-144
• Mounting Style: SMD/SMT

21.4
The SPI module allows a duplex, synchronous, serial communication between the MCU and peripheral
devices. Software can poll the SPI status flags or SPI operation can be interrupt driven.
The SPI system is enabled by setting the SPI enable (SPE) bit in SPI control register 1. While SPE is set,
the four associated SPI port pins are dedicated to the SPI function as:
Freescale Semiconductor
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Receive Shift Register
Receive Shift Register
Slave select (SS)
Serial clock (SCK)
Master out/slave in (MOSI)
Master in/slave out (MISO)
SPI Data Register
SPI Data Register
Functional Description
SPIF
SPIF
Data A Received
Data A Received
Figure 21-10. Reception with SPIF serviced too late
Figure 21-9. Reception with SPIF serviced in Time
= Unspecified
= Unspecified
MC9S12XE-Family Reference Manual Rev. 1.25
Data A
Data A
Data A
Data A
= Reception in progress
= Reception in progress
Data B Received
Data B Received
Data B
Data B
Chapter 21 Serial Peripheral Interface (S12SPIV5)
SPIF Serviced
Data B Lost
SPIF Serviced
Data B
Data C Received
Data C Received
Data C
Data C
Data C
Data C
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