MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 399

• 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

Both writes must occur in the order listed before the timeout, but any number of instructions can
be executed between the two writes. However, writing any value other than 0x5555 or 0xAAAA
to WSR resets the servicing sequence, requiring both values to be written to keep the watchdog
timer from causing a reset.
Freescale Semiconductor
Address
Reset
W
R
15
0
14
0
13
Figure 20-5. Watchdog Service Register (WSR)
0
12
0
11
0
MCF5271 Reference Manual, Rev. 2
10
0
IPSBAR + 0x0014_0006
0
9
0
8
WS
0
7
6
0
0
5
0
4
Memory Map/Register Definition
0
3
0
2
0
1
0
0
20-5