MPC5125YVN400 Freescale Semiconductor, MPC5125YVN400 Datasheet - Page 324

• Manufacturer Part Number: MPC5125YVN400
• Description: IC MCU 32BIT E300 324TEPBGA
• Manufacturer: Freescale Semiconductor
• Series: MPC51xxr

Specifications of MPC5125YVN400

• Core Processor: e300
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, USB OTG
• Peripherals: DMA, WDT
• Number Of I /o: 64
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.33 V ~ 1.47 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 324-PBGA
• Processor Series: MPC51xx
• Core: e300
• Data Bus Width: 32 bit
• Development Tools By Supplier: TWR-MPC5125-KIT, TWR-SER, TWR-ELEV, TOWER
• Maximum Clock Frequency: 400 MHz
• Operating Supply Voltage: 1.4 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Data Ram Size: 32 KB
• I/o Voltage: 3.3 V
• Interface Type: CAN, I2C
• Minimum Operating Temperature: - 40 C
• Program Memory Size: 32 bit
• Cpu Speed: 400MHz
• Embedded Interface Type: CAN, I2C, SPI, UART, USB
• Digital Ic Case Style: TEPBGA
• No. Of Pins: 324
• Rohs Compliant: Yes
• Cpu Family: MPC5xx
• Device Core Size: 32b
• Frequency (max): 400MHz
• Total Internal Ram Size: 32KB
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 324
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

DRAM Controller
1
The COMPACT_COMMAND register’s main purpose is to be written during enter/exit of self-refresh (the
auto-sequencer). This is described in the following section.
The compact command register allows three types of actions to be executed:
11-16
COMPACT_COMMAND[15:14]
DRAM_COMPACT_
COMMAND[15:0]
CKE is turned off the clock cycle when sending the requested command to the DRAM.
•
Field
Write DRAM attributes and wait. Wait is executed after updating the DRAM attributes. It is
possible to update the CKE bit, the self-refresh enable, the CLK configuration (on/off), and the
CMD mode setting.
If, during the time the wait is executed, another command is written to the Compact Command
register, this write is delayed until the wait is over.
During this time, the peripheral bus and all buses connected to it block and are not able to process
any other read or write.
00
01
1x
The compact command register gives the option to sent commands to the DRAM using 16-bit writes. See
Table
Table 11-11. DDR_COMPACT_COMMAND field descriptions
11-12.
Table 11-12. DDR_COMPACT_COMMAND register options
Write DRAM attributes and wait (wait time = wait time till next command) Wait is executed
after writing attributes.
Or
DRAM command
DRAM set mode registers
• CKE = COMPACT_COMMAND[13]
• Self Ref En = COMPACT_COMMAND[12]
• CLK ON = COMPACT_COMMAND[11]
• CMD MODE = COMPACT_COMMAND[10]
• If (COMPACT_COMMAND[7] == 1’b1)
• Wait time = (COMPACT_COMMAND[6:0] × 512) dram clock periods
• Wait time = (COMPACT_COMMAND[6:0] × 32) dram clock periods
• DRAM_CS = COMPACT_COMMAND[12]
• DRAM_RAS = COMPACT_COMMAND[11]
• DRAM_CAS = COMPACT_COMMAND[10]
• DRAM_WEB = COMPACT_COMMAND[9]
• DRAM_BA[2:0] = COMPACT_COMMAND[8:6]
• DRAM_ADDRESS[10] = COMPACT_COMMAND[5]
• if(COMPACT_COMMAND[4] == 1’b1) turn off CKE DRAM attribute bit
• DRAM_CS = 0
• DRAM_RAS = 0
• DRAM_CAS = 0
• DRAM_WEB = 0
• DRAM_ADDRESS[13] = 0
• DRAM_BA[2] = 0
• DRAM_ADDRESS[12:0] = COMPACT_COMMAND[12:0]
• DRAM_ADDRESS[14:13] = COMPACT_COMMAND[14:13]
MPC5125 Microcontroller Reference Manual, Rev. 2
Description
Description
Freescale Semiconductor
1