SCLT3-8BT8 STMicroelectronics, SCLT3-8BT8 Datasheet - Page 11

• Manufacturer Part Number: SCLT3-8BT8
• Description: IC SERIAL TERM 8-LINE 38HTSSOP
• Manufacturer: STMicroelectronics
• Type: Serialr

Specifications of SCLT3-8BT8

• Number Of Terminations: 8
• Voltage - Supply: 9 V ~ 35 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-TSSOP Exposed Pad, 38-eTSSOP, 38-HTSSOP
• Number Of I/os: 8
• Operating Supply Voltage: 9 V to 35 V
• Supply Current (max): 2.3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Mounting Style: SMD/SMT
• Data Bus Width: 8 bit, 16 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10100-5

SCLT3-8BT8
2.5.5
2.6
2.6.1
2.6.2
SPI shift register operation selector SPM
The input SPM allows the operation of the SPI shift register to be configured for an 8-bit or
16-bit operation.
When SPM is set low (COM
input state bits and the control bits. When SPM is set high (V
8-bit mode and transfers the eight input state bits in a faster transfer process.
This SPM input can be changed, and the SPI operation modified, only when the chip select
/CS is high (no communication).
SPI data transfer operation
SPI data frame
The selected structure of the SPI is a 16-bit word in order to be able to implement the input
state data and some control bits, such as the UVA alarm, the 4 parity bits and the two low
and high state stop bits.
SPI data transfer
The SCLT transfers its 16 data bits through the SPI within one chip select Hi-Lo-Hi
sequence. So, this length defines the minimum length that the shift register of the SPI
master controller is able to capture 16 bits.
Table 3
the control bits and ending with a stop bit.
Table 3.
Table 4.
Control
Bit #
Bit #
Bit #
Data
Data
shows the 16-bit mode in which the data are transferred starting from the data bits,
Last out
Last out
SPI data transfer organization versus SCLT input states with SPM = 0
SPI data transfer organization versus CLT input states with SPM = 1
Bit 8
Bit 8
LSB
High
IN 1
IN 1
Bit 1
Bit 9
Bit 9
Low
IN 2
IN 2
P
) the shift register runs in a 16-bit mode and transfers both the
Doc ID 15191 Rev 3
Bit 10
Bit 10
Bit 2
PC4
IN 3
IN 3
Bit 11
Bit 11
Bit 3
PC3
IN 4
IN 4
Bit 12
Bit 12
Bit 4
PC2
IN 5
IN 5
DD
) the shift register runs in an
Bit 13
Bit 13
Bit 5
PC1
IN 6
IN 6
Functional description
Bit 14
Bit 14
Bit 6
/OTA
IN 7
IN 7
First out
First out
/UVA
MSB
MSB
Bit 7
IN 8
IN 8
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