MC68HC908GZ8MFA Freescale Semiconductor, MC68HC908GZ8MFA Datasheet - Page 243

• Manufacturer Part Number: MC68HC908GZ8MFA
• Description: IC MCU 8K FLASH 8MHZ CAN 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GZ8MFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: CAN, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 37
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

17.8 Interrupts
Four SPI status flags can be enabled to generate CPU interrupt requests. See
Reading the SPI status and control register with SPRF set and then reading the receive data register
clears SPRF. The clearing mechanism for the SPTE flag is always just a write to the transmit data register.
The SPI transmitter interrupt enable bit (SPTIE) enables the SPTE flag to generate transmitter CPU
interrupt requests, provided that the SPI is enabled (SPE = 1).
The SPI receiver interrupt enable bit (SPRIE) enables the SPRF bit to generate receiver CPU interrupt
requests, regardless of the state of the SPE bit. See
The error interrupt enable bit (ERRIE) enables both the MODF and OVRF bits to generate a receiver/error
CPU interrupt request.
The mode fault enable bit (MODFEN) can prevent the MODF flag from being set so that only the OVRF
bit is enabled by the ERRIE bit to generate receiver/error CPU interrupt requests.
Freescale Semiconductor
SPTE
Transmitter empty
SPRF
Receiver full
OVRF
Overflow
MODF
Mode fault
ERRIE
MODF
OVRF
Figure 17-12. SPI Interrupt Request Generation
Flag
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
SPRIE
SPTE
Table 17-2. SPI Interrupts
SPTIE
SPRF
SPI transmitter CPU interrupt request
(SPTIE = 1, SPE = 1)
SPI receiver CPU interrupt request
(SPRIE = 1)
SPI receiver/error interrupt request
(ERRIE = 1)
SPI receiver/error interrupt request
(ERRIE = 1)
SPE
Figure
Request
17-12.
NOT AVAILABLE
SPI TRANSMITTER
CPU INTERRUPT REQUEST
NOT AVAILABLE
SPI RECEIVER/ERROR
CPU INTERRUPT REQUEST
Table
17-2.
Interrupts
243