MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 343
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MCF5270CAB100
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5270CAB100
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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18.4.6 Initialization Code
The following assembly code initializes the SDRAM example.
Power-Up Sequence:
move.w
move.w
move.l
move.l
move.l
move.l
Precharge Sequence:
move.l
move.l
move.l
precharge
move.l
Refresh Sequence:
move.l
move.l
Mode Register Initialization Sequence:
move.l
move.l
move.l
move.l
move.l
Freescale Semiconductor
#0x0026, d0
d0, DCR
#0xFF880300, d0
d0, DACR0
#0x00740001, d0
d0, DMR0
#0xFF880308, d0
d0, DACR0
#0xBEADDEED, d0
d0, 0xFF880000
#0xFF888300, d0
d0, DACR0
#0x00600001, d0
#0xFF888340, d0
d0, DACR0
#0x00000000, d0
d0, 0xFF800800
MCF5271 Reference Manual, Rev. 2
//Initialize DCR
//Initialize DACR0
//Initialize DMR0
//Set DACR0[IP]
//Write
//Enable refresh bit in DACR0
//Initialize DMR0 move.ld0, DMR0
//Enable DACR0[IMRS]; DACR0[RE] remains set
//Access SDRAM address to initialize mode register
and
value
to
memory
location
SDRAM Example
to
init.
18-25
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