MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 69

• 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

3.2.1.2
These registers can be used as software stack pointers, index registers, or base address registers;
they can also be used for word and longword operations.
3.2.1.3
Certain ColdFire implementations, including the MCF5271, support two unique stack pointer
(A7) registers—the supervisor stack pointer (SSP) and the user stack pointer (USP). This support
provides the required isolation between operating modes of the processor. The SSP is described in
Section 3.2.3.2, “Supervisor/User Stack Pointers (A7 and
A subroutine call saves the PC on the stack and the return restores it from the stack. Both the PC
and the SR are saved on the supervisor stack during the processing of exceptions and interrupts.
The return from exception (RTE) instruction restores the SR and PC values from the supervisor
stack.
3.2.1.4
The PC contains the address of the currently executing instruction. During instruction execution
and exception processing, the processor automatically increments the contents of the PC or places
a new value in the PC, as appropriate. For some addressing modes, the PC is used as a base address
for PC-relative operand addressing.
Freescale Semiconductor
Address Registers (A0–A6)
Stack Pointer (A7)
Program Counter (PC)
31
Figure 3-2. User Programming Model
MCF5271 Reference Manual, Rev. 2
15
15
7
7
0
0
OTHER_A7).”
CCR
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
PC
Data
Registers
Address
registers
USERStack
Pointer
Program
Counter
ConditionCode
Register
Processor Register Description
3-3