Digital

We offer a vast variety of silicon proven SPI that are based on Weasic’s unique standard cells. Moreover, we offer custom made IO for every possible package solution including Crystal Oscillator and LVDS receivers.

WEA1R8SPI45
WEA1R8SPI13
WEA128R4BSPI45
WEA32R4SPI22
WEA1R8SPI55
WEA1R8SPI45

SPI 1V W only programmable 256b register 3 wire
The WEA1R8SPI45 is a cascade of flip flops, sharing the same clock, in which the output of each flip-flop is connected to the input of the next flip-flop in the chain, resulting in a circuit that shifts by one position the “bit array” stored in it, “shifting in” the data present at its input and ‘shifting out’ the last bit in the array, at each transition of the clock input. The WEA1R8SPI45 contains an 8-bit serial-in, serial-out shift register that feeds an 8-bit, D-type storage register on the rising edge of the clock (SCK).

Features
Supply Voltage: 1V
Output Voltage:
256 registers
8-bit Serial – In, Serial Out shift

WEA1R8SPI13

SPI 1V W only programmable 256b register 3 wire
The WEA1R8SPI13 is a cascade of flip flops, sharing the same clock, in which the output of each flip-flop is connected to the input of the next flip-flop in the chain, resulting in a circuit that shifts by one position the “bit array” stored in it, “shifting in” the data present at its input and ‘shifting out’ the last bit in the array, at each transition of the clock input. The WEA1R8SPI13contains an 8-bit serial-in, serial-out shift register that feeds an 8-bit, D-type storage register on the rising edge of the clock (SCK).

Features
Supply Voltage:
Output Voltage:
256 registers
8-bit Serial – In, Serial Out shift

WEA128R4BSPI45

SPI 1.8V R /W 128 Register 16b 4 wire interface
The WEA128R4BSPI45 receives data on the rising edge of the SCK and drives data out on the falling edge of SCK. The data output SDO shall always drive while CS is low. The WEA128R4BSPI45 provided for 16×56 and 16×34 bit registers. The WEA128R4BSPI45 operates as a master device.

Features
Supply Volatge:1.8V
Output Voltage:1.8V
16×56 bit registers (Area:400umx1750um)
16×34 bit registers (Area:400umx1000um)
Expandable to 16×128 bit registers

WEA32R4SPI22

SPI 0.8V R/W 32 register 16b 5 wire interface
The WEA32R4SPI22 is a high-speed synchronous serial input/output port that allows a serial bit stream of programmed
length (1 to 8 bits) to be shifted into and out of the device at a programmed bit-transfer rate. The WEA32R4SPI22 consists of a Serial-In Register circuit, a Serial-Out Register circuit, R/W state selector, address decoder and 32b registers. The first 5 data bits are referring to the register address that will be selected while the rest of the 32 bits refer to the data that have been read from the specific selected register. The Serial In Register is responsible for selecting the serial address word and the serial data word at the proper timing and control address selector. The Serial Out register is responsible for latching the data at the proper R/W falling edge and to export them serially through a high–Z output buffer that is controlled by DOUTEN signal. The register selector is responsible for accessing the proper register so that we perform a read/write operation.

Features
Voltage Operating:1.2V
Output Voltage:0V-2.6V
8×32 bit registers
1.2V logic (through a 1.2V LS) or 2.6V logic directly control

WEA1R8SPI55

SPI 1V W only programmable 256b register 3 wire
The WEA1R8SPI55 is a cascade of flip flops, sharing the same clock, in which the output of each flip-flop is connected to the input of the next flip-flop in the chain, resulting in a circuit that shifts by one position the “bit array” stored in it, “shifting in” the data present at its input and ‘shifting out’ the last bit in the array, at each transition of the clock input. The WEA1R8SPI55 contains an 8-bit serial-in, serial-out shift register that feeds an 8-bit, D-type storage register on the rising edge of the clock (SCK).

Features
Supply Voltage: 1V
Output Voltage:
256 registers
8-bit Serial – In, Serial Out shift

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