MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 396

• 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

Watchdog Timer Module
20.1.2 Block Diagram
20.2
This subsection describes the memory map and registers for the watchdog timer. The watchdog
timer has a IPSBAR offset for base address of 0x14_0000. Refer to
the watchdog memory map.
20.2.1 Register Description
The watchdog timer programming model consists of these registers:
20-2
1
• Watchdog control register (WCR), which configures watchdog timer operation
• Watchdog modulus register (WMR), which determines the timer modulus
• Watchdog count register (WCNTR), which provides visibility to the watchdog counter
IPSBAR Offset
S = CPU supervisor mode access only. S/U = CPU supervisor or user mode access. User mode accesses to
supervisor only addresses have no effect and result in a cycle termination transfer error.
0x14_0000
0x14_0004
reload value
value
Memory Map/Register Definition
Internal Bus
Clock
Watchdog Count Register (WCNTR)
Watchdog Control Register (WCR)
Table 20-2. Watchdog Timer Module Memory Map
[31:24]
Figure 20-1. Watchdog Timer Block Diagram
Divide by
HALTED
DOZE
WAIT
4096
EN
16-bit WCNTR
MCF5271 Reference Manual, Rev. 2
[23:16]
16-bit Watchdog Counter
Internal Bus
Internal Bus
16-bit WMR
Watchdog Modulus Register (WMR)
Watchdog Service Register (WSR)
[15:8]
Load Counter
16-bit WSR
Count = 0
Table 20-2
[7:0]
Freescale Semiconductor
Reset
for an overview of
Access
S/U
S
1