MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 282
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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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DMA Controller Module
Figure 14-10
not parked on the bus, so the diagram shows how the CPU can generate multiple bus cycles during
DMA transfers. In cycle-steal mode, the maximum length of DREQ assertion to maintain a single
transfer is configuration-dependent. To avoid multiple transfers, for single-address accesses, no
hold signal, byte accesses, and idle channels, DREQ may be asserted for no more than four clock
cycles.
Figure 14-11
memory.
14-18
Figure 14-10. Dual-Address, Peripheral-to-SDRAM, Lower-Priority DMA Transfer
SD_SRAS
SD_SCAS
DRAMW
RAS[1:0]
CAS[3:0]
SIZ[1:0]
DACKn
A[31:0]
D[31:0]
DREQn
CLKIN
R/W
CSx
TIP
AS
TA
TS
shows a single-address DMA transfer in which an external peripheral is reading from
shows a dual-address, external peripheral-to-SDRAM DMA transfer. The DMA is
CPU
MCF5271 Reference Manual, Rev. 2
DMA Read
CPU
DMA Write
Freescale Semiconductor
Precharge
CPU
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