MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 438

• Manufacturer Part Number: MC56F8257MLH
• Description: DSC 64K FLASH 60MHZ 64-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8257MLH

• Core Processor: 56800E
• Core Size: 16-Bit
• Speed: 60MHz
• Connectivity: CAN, I²C, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 16
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x12b, D/A 1x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-LQFP
• Product: DSCs
• Processor Series: 56800E
• Core: 56800E
• Device Million Instructions Per Second: 60 MIPs
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 54
• Data Ram Size: 8 KB
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Memory Map and Register Definition
Write: Anytime for TXEx flags when not in initialization mode; write of 1 clears flag,
write of 0 is ignored
Address: CAN_TFLG – F440h base + 6h offset = F446h
13.3.9 MSCAN Transmitter Interrupt Enable Register (CAN_TIER)
Address: CAN_TIER – F440h base + 7h offset = F447h
438
Reset
Reset
Read
Read
Write
Write
Bit
Bit
Reserved
15–3
Field
TXE
2–0
15
15
0
0
14
14
0
The CAN_TIER register is held in the reset state when the
initialization mode is active (INITRQ = 1 and INITAK = 1).
This register is writable when not in initialization mode
(INITRQ = 0 and INITAK = 0).
0
This read-only bitfield is reserved and always has the value zero.
Transmitter Buffer Empty
TXE[2:0] This flag indicates that the associated transmit message buffer is empty, and thus not scheduled
for transmission. The CPU must clear the flag after a message is set up in the transmit buffer and is due
for transmission. The MSCAN sets the flag after the message is sent successfully. The flag is also set by
the MSCAN when the transmission request is successfully aborted due to a pending abort request. If not
masked, a transmit interrupt is pending while this flag is set.
Clearing a TXEx flag also clears the corresponding ABTAKx. When a TXEx flag is set, the corresponding
ABTRQx bit is cleared. When listen-mode is active, the TXEx flags cannot be cleared and no transmission
is started.
Read and write accesses to the transmit buffer will be blocked, if the corresponding TXEx bit is cleared
(TXEx=0) and the buffer is scheduled for transmission.
0
1
The associated message buffer is full (loaded with a message due for transmission)
The associated message buffer is empty (not scheduled)
13
13
0
0
12
12
0
0
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
11
11
0
0
CAN_TFLG field descriptions
10
10
0
0
0
0
0
0
9
9
Preliminary
NOTE
0
0
8
8
Description
0
0
7
7
0
0
6
6
0
0
5
5
0
0
4
4
0
0
3
3
Freescale Semiconductor
1
0
2
2
TXEIE
TXE
1
0
1
1
1
0
0
0