MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 153

• Manufacturer Part Number: MCF5270CAB100
• Description: MCU V2 COLDFIRE 64K SRAM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: MCF527xr

Specifications of MCF5270CAB100

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 160-QFP
• Processor Series: MCF527x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: NNDK-MOD5272-KIT, NNDK-MOD5270-KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

sign of this error count determines the direction taken by the calibration D/A to update the
calibration current. After obtaining the error count for the present iteration, both counters are
cleared. The stored count of COUNT0 is preserved while a new feedback count is obtained, and
the process to determine the error count is repeated. The calibration system repeats this process
eight times, once for each bit of the calibration D/A.
After the last decision is made the CALDONE bit of the SYNSR is set. If an error occurs during
the calibration routine, then CALPASS is immediately cleared. If the routine completed
successfully then CALPASS remains set.
Figure 7-7
Figure 7-8
Freescale Semiconductor
Reference Counter
shows a flow chart showing the steps taken by the calibration circuit.
shows a block diagram of the calibration circuitry and its associated registers.
ICO Counter
Control
Figure 7-7. FM Auto-Calibration Data Flow
13
MCF5271 Reference Manual, Rev. 2
Count 0
A
13
A–B=
delta
count
10
B
13
Expected (EXP)
C
C–D=error count
10
D
Error (ERR)
Functional Description
10
7-19