MCF52254AF80 Freescale Semiconductor, MCF52254AF80 Datasheet - Page 34

• Manufacturer Part Number: MCF52254AF80
• Description: MCU 32BIT COLDFIRE V2 100LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF5225xr

Specifications of MCF52254AF80

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 80MHz
• Connectivity: CAN, Ethernet, I²C, QSPI, UART/USART, USB OTG
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 56
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x12b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Processor Series: MCF522x
• Core: ColdFire V2
• Data Bus Width: 32 bit
• Data Ram Size: 64 KB
• Interface Type: I2C/QSPI/UART
• Maximum Clock Frequency: 80 MHz
• Number Of Programmable I/os: 56
• Number Of Timers: 10
• Operating Supply Voltage: - 0.3 V to + 4 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: TWR-MCF5225X, TWR-SENSOR-PAK, TWR-SER, TWR-ELEV, TOWER, M52259EVB, M52259DEMOKIT
• Minimum Operating Temperature: 0 C
• On-chip Adc: 8-ch x 12-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.11.1
The following timing specs meet the requirements for MII and 7-Wire style interfaces for a range of transceiver devices.
2.11.2
Freescale Semiconductor
1
In MII mode, n = 3
Num
1
E1
E2
E3
E4
—
In MII mode, n = 3
Num
E6
E5
E7
E8
—
Receive Signal Timing Specifications
Transmit Signal Timing Specifications
RXCLK frequency
RXD[n:0], RXDV, RXER to RXCLK setup
RXCLK to RXD[n:0], RXDV, RXER hold
RXCLK pulse width high
RXCLK pulse width low
TXCLK frequency
TXCLK to TXD[n:0], TXEN, TXER invalid
TXCLK to TXD[n:0], TXEN, TXER valid
TXCLK pulse width high
TXCLK pulse width low
TXCLK (Input)
RXCLK (Input)
TXD[n:0]
RXD[n:0]
TXEN,
TXER
Figure 8. MII Transmit Signal Timing Diagram
Figure 7. MII Receive Signal Timing Diagram
RXDV,
RXER
Characteristic
Characteristic
MCF52259 ColdFire Microcontroller, Rev. 4
Table 18. Transmit Signal Timing
Table 17. Receive Signal Timing
1
E6
1
1
1
E1
E4
E8
Valid Data
Valid Data
E3
E2
35%
35%
Min
E7
—
—
E5
5
MII Mode
35%
35%
Min
—
5
5
MII Mode
65%
65%
Max
25
25
—
65%
65%
Max
25
—
—
Electrical Characteristics
RXCLK period
RXCLK period
t
t
TXCLK
TXCLK
MHz
Unit
ns
ns
MHz
Unit
ns
ns
34