MCF52254CAF66 Freescale Semiconductor, MCF52254CAF66 Datasheet - Page 32

• Manufacturer Part Number: MCF52254CAF66
• Description: MCU 32BIT COLDFIRE V2 100LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF5225xr

Specifications of MCF52254CAF66

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 66MHz
• 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: -40°C ~ 85°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: 66 MHz
• Number Of Programmable I/os: 56
• Number Of Timers: 10
• Operating Supply Voltage: - 0.3 V to + 4 V
• Maximum Operating Temperature: + 85 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: - 40 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

2.9
2.10
A multi-function external bus interface called Mini-FlexBus is provided with basic functionality to interface to slave-only
devices up to a maximum bus frequency of 80MHz. It can be directly connected to asynchronous or synchronous devices such
as external boot ROMs, flash memories, gate-array logic, or other simple target (slave) devices with little or no additional
circuitry. For asynchronous devices a simple chip-select based interface can be used.
All processor bus timings are synchronous; that is, input setup/hold and output delay are given in respect to the rising edge of
a reference clock, MB_CLK. The MB_CLK frequency is half the internal system bus frequency.
The following timing numbers indicate when data is latched or driven onto the external bus, relative to the Mini-FlexBus output
clock (MB_CLK). All other timing relationships can be derived from these values.
Freescale Semiconductor
Minimum core speed for USB operation
1
2
USB Operation
Mini-FlexBus External Interface Specifications
Num
MB1
MB2
MB3
MB4
MB5
Specification is valid for all MB_A[19:0], MB_D[7:0], MB_CS[1:0], MB_OE, MB_R/W, and MB_ALE.
Specification is valid for all MB_D[7:0].
Frequency of Operation
Clock Period
Output Valid
Output Hold
Input Setup
Input Hold
Characteristic
Table 16. Mini-FlexBus AC Timing Specifications
Characteristic
Table 15. USB Operation Specifications
MCF52259 ColdFire Microcontroller, Rev. 4
12.5
f
Min
sys_USB_min
—
—
2
6
0
Symbol
Max
80
—
—
—
—
8
Value
16
MHz
Unit
Electrical Characteristics
ns
ns
ns
ns
ns
Notes
MHz
Unit
1
1
2
2
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