LH7A404 Sharp Electronics, LH7A404 Datasheet - Page 48

• Manufacturer Part Number: LH7A404
• Manufacturer: Sharp Electronics

Specifications of LH7A404

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Processing Unit: Microcontroller
• Operating Supply Voltage (min): 1.71V
• Operating Supply Voltage (typ): 1.8V
• Operating Supply Voltage (max): 1.89V
• Package Type: CABGA
• Pin Count: 324
• Mounting: Surface Mount
• Rad Hardened: No
• Lead Free Status / RoHS Status: Not Compliant

LH7A404
SSP Waveforms
data frame formats:
• Texas Instruments SSI
• Motorola SPI
• National Semiconductor MICROWIRE
length, depending upon the programmed data size.
Each data frame is transmitted beginning with the
Most Significant Bit (MSB) i.e. ‘big endian’. For all
three formats, the SSP serial clock is held LOW (inac-
tive) while the SSP is idle. The SSP serial clock tran-
sitions only during active transmission of data. The
48
The Synchronous Serial Port (SSP) supports three
Each frame format is between 4 and 16 bits in
Figure 21. Texas Instruments Synchronous Serial Frame Format (Continuous Transfer)
Figure 20. Texas Instruments Synchronous Serial Frame Format (Single Transfer)
SSPTXD/
SSPTXD/
SSPFRM
SSPFRM
SSPRXD
SSPRXD
SSPCLK
SSPCLK
MSB
MSB
4 to 16 BITS
Version 1.5
4 to 16 BITS
SSPFRM signal marks the beginning and end of a
frame.
synchronous serial frame format, Figure 22 through
Figure 29 show the Motorola SPI format, and Figure 30
and Figure 31 show National Semiconductor’s MICRO-
WIRE data frame format.
is pulsed prior to each frame’s transmission for one
serial clock period beginning at its rising edge. For this
frame format, both the SSP and the external slave
device drive their output data on the rising edge of the
clock and latch data from the other device on the falling
edge. See Figure 20 and Figure 21.
Figure 20 and Figure 21 show Texas Instruments
For Texas Instruments SSI format, the SSPFRM pin
LSB
LSB
32-Bit System-on-Chip
LH7A404-24
LH7A404-25
Data Sheet