MCF5280CVM66 Freescale Semiconductor, MCF5280CVM66 Datasheet - Page 130

• Manufacturer Part Number: MCF5280CVM66
• Description: IC MPU 32BIT COLDF 256-MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF528xr

Specifications of MCF5280CVM66

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 66MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, SPI, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 142
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-MAPBGA
• Controller Family/series: ColdFire
• No. Of I/o's: 150
• Program Memory Size: 2KB
• Ram Memory Size: 64KB
• Cpu Speed: 66.67MHz
• Embedded Interface Type: CAN, I2C, SPI, UART
• No. Of Pwm Channels: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

ColdFire Flash Module (CFM)
Consider the following example for f
So, for f
for the timing of program and erase operations.
When CFMCLKD is written, the DIVLD bit is set automatically. If DIVLD is 0, CFMCLKD has not been
written since the last reset. Program and erase commands will not execute if this register has not been
written (see
6.4.3.2
A command state machine is used to supervise the write sequencing of program, erase, and verify
commands. To prepare for a command, the CFMUSTAT[CBEIF] flag should be tested to ensure that the
address, data, and command buffers are empty. If CBEIF is set, the command write sequence can be
started.
This three-step command write sequence must be strictly followed. No intermediate writes to the CFM
module are permitted between these three steps. The command write sequence is:
6-18
1. Write the 32-bit longword to be programmed to its location in the CFM array. The address and data
will be stored in internal buffers. All address bits are valid for program commands. The value of
the data written for verify and erase commands is ignored. For mass erase or verify, the address can
be any location in the CFM array. For page erase, address bits [9:0] are ignored.
SYS
= 66 MHz, writing 0x54 to CFMCLKD will set f
Section 6.4.3.4, “Flash User Mode Illegal
Program, Erase, and Verify Sequences
For proper program and erase operations, it is critical to set f
150 kHz and 200 kHz. Array damage due to overstress can occur when f
is less than 150 kHz. Incomplete programming and erasure can occur when
f
Command execution time increases proportionally with the period of f
CLK
is greater than 200 kHz.
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
f
CLK
DIV[5:0] =
f
CLK
=
=
SYS
=
=
2 x (DIV[5:0] + 1) x (1 + (PRDIV8 x 7))
= 66 MHz:
2 x (DIV[5:0] + 1) x (1 + (PRDIV8 x 7))
2 x 200kHz x (1 + (PRDIV8 x 7))
2 x (20 + 1) x (1 + (1 x 7))
400 kHz x (1 + (1 x 7))
WARNING
NOTE
66 MHz
66 MHz
Operations”).
f
f
SYS
SYS
f
SYS
CLK
to 196.43 kHz which is a valid frequency
= 196.43 kHz
= 20
CLK
between
Freescale Semiconductor
CLK
CLK
.