MPC5125YVN400 Freescale Semiconductor, MPC5125YVN400 Datasheet - Page 764

• 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

Real Time Clock (RTC)
27.4
27.4.1
When power is first applied to the RTC, the target time register is initialized to 0x0000_0000 and the actual
time count register is initialized to 0xFFFF_FFFE. When the target time register is set to 0x0000_0000,
the HIB_MODE pin cannot be asserted. The Keep alive register is initialized to 0x0000_0087. This
effectively masks off any external wakeup sources. To activate any of the external wakeup sources
associated with the RTC module after power is first applied to V
the RTC keep alive register.
After power is applied to the MPC5125, system software must initialize all of the various registers of the
RTC module to properly reflect the current date and time.
27.4.2
The RTC employs two basic ways to bring the MPC5125 from a powerdown condition to a fully
operational condition. One method is for the value in the actual time count register to increment to a value
greater than or equal to the value in the target time register. The second method is to assert one of the
external RTC wakeup pins.
From the release of reset, the time target register is set to 0x0000_0000. Thus, the actual time count register
is always greater than or equal to the time target register. Under this condition, the HIB_MODE asserts to
a logic 1 and can be used to turn on external power regulators powering the device. Recall that the actual
time count register is set to 0xFFFF_FFFE at the release of reset and cannot be modified by software.
When being clocked at a 1 Hz rate, this register requires 136 years before the actual time count rollover.
When programming a time in the future to wakeup, the system software reads the actual time count
register, adds an appropriate offset and then writes the resultant value to the time target register.
When the value in the actual time count register is less than the value in the target time register, the logic
level on the HIB_MODE pin is determined by the WU_SRC_[0:5] bits in the RTC keep alive register. The
truth table for controlling the HIB_MODE pin is shown in
Five of the external RTC wakeup pins are controlled by its own enable bit and edge detect bit. If an external
RTC wakeup pin is not enabled, then its corresponding WU_SRC_[0:5] bit is held at a logic 0. If an
external RTC wakeup pin is enabled, then its corresponding WU_SRC_[0:5] bit is set or cleared according
to the truth table presented in
27-16
Functional Description
Behavior at Power On
Behavior of Wakeup Sources
•
If RTC_ATC > RTC_TTR
If RTC_ATC = RTC_TTR
The GPIO00 wake up source can neither be masked nor configured to a
different polarity level. To enter Hibernation mode, this pin needs to be
in a logic one state.
Table 27-14. Truth Table for the Functionality of the HIB_MODE
Condition
Table
MPC5125 Microcontroller Reference Manual, Rev. 2
27-16.
WU_SRC_[0:5]
X
X
Table 27-14
BAT
, software must appropriately program
and
HIB_MODE
Table 27-16
1
1
Freescale Semiconductor
.