MCIMX253CVM4 Freescale Semiconductor, MCIMX253CVM4 Datasheet - Page 95

• Manufacturer Part Number: MCIMX253CVM4
• Description: IC MPU I.MX25 IND 400MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX25r

Specifications of MCIMX253CVM4

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: 1-Wire, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 128
• Program Memory Type: External Program Memory
• Ram Size: 144K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.52 V
• Data Converters: A/D 3x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 400-LFBGA
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Compliant

1
3.7.13
Figure 67
The PWM can be programmed to select one of three clock signals as its source frequency. The selected
clock signal is passed through a prescaler before being input to the counter. The output is available at the
pulse width modulator output (PWMO) external pin.
Freescale Semiconductor
T is pixel clock period
VSYNC
HSYNC
HSYNC
LSCLK
T1
T2
T3
T4
T5
T6
ID
OE
LD
depicts the timing of the PWM, and
Pixel clock period
HSYNC width
LD setup time
LD hold time
Delay from the end of HSYNC to the beginning of the OE pulse
Delay from end of OE to the beginning of the HSYNC pulse
Pulse Width Modulator (PWM) Timing Parameters
T2
Line 1
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
T5
Line 2
T3
T1
Table 72. LCDC TFT Mode Timing Parameters
Figure 66. LCDC TFT Mode Timing Diagram
T4
Description
Table 73
lists the PWM timing characteristics.
Line n
Min.
22.5
1
5
5
3
1
Line 1
1000
Ma
—
—
—
—
—
T6
Unit
ns
T
ns
ns
T
T
1
1
1
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