MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 338

• 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

Synchronous DRAM Controller Module
18.4
This example interfaces a 512K x 32-bit x 4 bank SDRAM component to a MCF5271 operating
at 40 MHz bus speed (80 MHz core).
18.4.1 SDRAM Interface Configuration
To interface this component to the MCF5271 DRAM controller, use the connection table that
corresponds to a 32-bit port size with 8 columns
when the part is functional.
18-20
SDRAM Example
Speed grade (-8E)
10 rows, 8 columns
Two bank-select lines to access four internal banks
ACTV
Period between auto-refresh and
ACTV
Precharge command to
Last data input to
Auto-refresh period for 4096 rows (t
-to-read/write delay (t
command to precharge command (t
Figure 18-10. Mode Register Set (
Table 18-25. SDRAM Example Specifications
SD_CS[1] or [0]
Table 18-26
PALL
SD_SCAS
SD_SRAS,
CLKOUT
SD_WE
D[31:0]
A[31:0]
command (t
Parameter
ACTV
MCF5271 Reference Manual, Rev. 2
RCD
command (t
)
Table 18-25
ACTV
shows the proper hardware connections.
RWL
REF
)
command (t
)
RAS
RP
)
(Table
MRS
)
lists design specifications for this example.
RC
)
18-24). Two pins select one of four banks
MRS
40 MHz (25-ns period)
20 ns (min.)
70 ns
48 ns (min.)
20 ns (min.)
1 bus clock (25 ns)
64 mS
) Command
Specification
Freescale Semiconductor