MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 126

• Manufacturer Part Number: MCF5253VM140J
• Description: IC MCU 2.1MIPS 140MHZ 225MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF525xr

Specifications of MCF5253VM140J

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 140MHz
• Connectivity: CAN, EBI/EMI, I²C, QSPI, UART/USART, USB OTG
• Peripherals: DMA, WDT
• Program Memory Type: ROMless
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 225-MAPBGA
• Processor Series: MCF525x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

Synchronous DRAM Controller Module
Next, this information is mapped to an address to determine the hexadecimal value.
Although A[31:20] corresponds to the address programmed in DACR0, according to how DACR0 and
DMR0 are initialized, bit 19 must be set to hit in the SDRAM. Thus, before the mode register bit is set,
DMR0[19] must be set to enable masking.
7.6.6
The following assembly code initializes the SDRAM example.
Power-Up Sequence:
Precharge Sequence:
7-22
Setting
Setting
(hex)
(hex)
Field
Field
move.w
move.w
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
MCF5253 Pins
Initialization Code
31
15
–
0
#0x8012, d0
d0, DCR
#0xFF881220, d0
d0, DACR0
#0x00740075, d0
d0, DMR0
#0xFF881228, d0
d0, DACR0
#0xBEADDEED, d0
d0, 0xFF880000
A22
A21
A20
A15
A16
30
14
–
0
0
1
29
13
–
0
Figure 7-17. Mode Register Mapping to MCF5253 A[31:0]
Table 7-17. Mode Register Initialization (continued)
28
12
–
1
SDRAM Pins
27
11
–
0
BA1 / A13
BA0 / A12
MCF5253 Reference Manual, Rev. 1
A11
A1
A0
26
10
–
0
0
0
//Write to memory location to init. precharge
25
–
0
9
24
–
–
8
23
–
–
7
Mode Register Initialization
Reserved
22
0
–
6
BL
BL
–
–
0
0
21
0
–
5
20
0
–
4
//Initialize DACR0
//Initialize DMR0
//Initialize DCR
//Set DACR0[IP]
19
0
–
3
Freescale Semiconductor
18
0
–
2
0
0
0
0
0
0
0
17
0
–
1
16
V
0
–
0