MC908AZ32ACFU Freescale Semiconductor, MC908AZ32ACFU Datasheet - Page 288

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MC908AZ32ACFU

Manufacturer Part Number
MC908AZ32ACFU
Description
IC MCU 32K FLASH 8.4MHZ 64-QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC908AZ32ACFU

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
40
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 15x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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MSCAN Controller (MSCAN08)
TERRIF — Transmitter Error Passive Interrupt Flag
BOFFIF — Bus-Off Interrupt Flag
OVRIF — Overrun Interrupt Flag
RXF — Receive Buffer Full
1. Condition to set the flag: TERRIF = (128 ð TEC ð 255) & BOFFIF
288
This flag is set when the MSCAN08 goes into error passive status due to the Transmit Error counter
exceeding 127 and the Bus-off interrupt flag is not set
while this flag is set.
This flag is set when the MSCAN08 goes into bus-off status, due to the transmit error counter
exceeding 255. It cannot be cleared before the MSCAN08 has monitored 128 times 11 consecutive
‘recessive’ bits on the bus. If not masked, an Error interrupt is pending while this flag is set.
This flag is set when a data overrun condition occurs. If not masked, an error interrupt is pending while
this flag is set.
The RXF flag is set by the MSCAN08 when a new message is available in the foreground receive
buffer. This flag indicates whether the buffer is loaded with a correctly received message. After the
CPU has read that message from the receive buffer the RXF flag must be cleared to release the buffer.
A set RXF flag prohibits the exchange of the background receive buffer into the foreground buffer. If
not masked, a receive interrupt is pending while this flag is set.
1 = MSCAN08 went into transmit error passive status.
0 = No transmit error passive status has been reached.
1 = MSCAN08has gone into bus-off status.
0 = No bus-off status has bee reached.
1 = A data overrun has been detected since last clearing the flag.
0 = No data overrun has occurred.
1 = The receive buffer is full. A new message is available.
0 = The receive buffer is released (not full).
To ensure data integrity, no registers of the receive buffer shall be read
while the RXF flag is cleared.
The CRFLG register is held in the reset state when the SFTRES bit in
CMCR0 is set.
MC68HC908AZ32A Data Sheet, Rev. 2
NOTE
NOTE
(1)
. If not masked, an Error interrupt is pending
Freescale Semiconductor

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