MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 205

• Manufacturer Part Number: MCF51EM256CLL
• Description: IC MCU 32BIT 256KB FLASH 100LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51EMr

Specifications of MCF51EM256CLL

• Core Processor: Coldfire V1
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LCD, LVD, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 16x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Processor Series: MCF51EM
• Core: ColdFire V1
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: RS-232, LIN
• Maximum Clock Frequency: 50 MHz
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: DEMOEM
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

8.3.2.1
Figure 8-10
and the 16-bit status register, and the second longword contains the 32-bit program counter address.
The 16-bit format/vector word contains three unique fields:
Freescale Semiconductor
•
•
•
SSP
+ 0x4
A 4-bit format field at the top of the system stack is always written with a value of 4, 5, 6, or 7 by
the processor, indicating a two-longword frame format. See
There is a 4-bit fault status field, FS[3:0], at the top of the system stack. This field is defined for
access and address errors only and written as zeros for all other exceptions. See
The 8-bit vector number, vector[7:0], defines the exception type and is calculated by the processor
for all internal faults and represents the value supplied by the interrupt controller in case of an
interrupt. See
→
shows exception stack frame. The first longword contains the 16-bit format/vector word (F/V)
31 30 29 28 27
Exception Stack Frame Definition
Format
FS[3:0]
0100
0101
1000
1001
1100
1101
00xx
011x
101x
111x
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Table
of Exception, Bits 1:0
Original SSP @ Time
FS[3:2]
26 25 24 23 22 21 20 19 18 17
8-6.
00
01
10
11
Figure 8-10. Exception Stack Frame Form
Table 8-7. Format Field Encodings
Table 8-8. Fault Status Encodings
Vector
Original SSP - 10
Original SSP - 11
Original SSP - 8
Original SSP - 9
Instruction of
Error on instruction fetch
Error on operand write
SSP @ 1st
Error on operand read
Handler
Program Counter
FS[1:0]
Definition
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
16 15 14 13 12 11 10 9
Format Field
Table
0100
0101
0110
0111
Status Register
8-7.
8
7
6
5
Table
4
3
8-8.
ColdFire Core
2
1
0
8-13