MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 334
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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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Synchronous DRAM Controller Module
Accesses in synchronous burst page mode always cause the following sequence:
18.3.4.4 Auto-Refresh Operation
The DRAM controller is equipped with a refresh counter and control. This logic is responsible for
providing timing and control to refresh the SDRAM without user interaction. Once the refresh
counter is set, and refresh is enabled, the counter counts to zero. At this time, an internal refresh
18-16
SDRAM_CS[0] or [1]
1.
2.
3. Required number of
4. Some transfers need more
5.
6. Required number of idle clocks inserted to assure precharge-to-
ACTV
NOP
NOP
port size.
PALL
DQM[3:0]
SYSCLK
DRAMW
commands to assure SD_SRAS-to-SD_SCAS delay (if CAS latency is 1, there are no
commands).
D[31:0]
A[31:0]
command
command
SRAS
SCAS
OE
t
CASL
ACTV
Row
Figure 18-7. Burst Write SDRAM Access
= 2
READ
NOP
NOP
or
MCF5271 Reference Manual, Rev. 2
Column
WRITE
WRITE
commands to assure the
commands to service the transfer size with the given
Column Column
WRITE
WRITE
t
RWL
WRITE
ACTV
Column
-to-precharge delay.
NOP
ACTV
PALL
delay.
Freescale Semiconductor
t
RP
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