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CAT150081LWI-GT3 датащи(PDF) 6 Page - Catalyst Semiconductor |
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CAT150081LWI-GT3 датащи(HTML) 6 Page - Catalyst Semiconductor |
6 / 15 page CAT15008, CAT15016 Doc. No. 1125 Rev. A 6 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice Figure 2 shows the maximum pulse duration of negative-going VCC transients that do not cause a reset condition. As the amplitude of the transient goes further below the threshold (increasing VTH - VCC), the maximum pulse duration decreases. In this test, the VCC starts from an initial voltage of 0.5V above the threshold and drops below it by the amplitude of the overdrive voltage (VTH - VCC). EMBEDDED EEPROM DESCRIPTION The CAT15008/16 devices support the Serial Peripheral Interface (SPI) bus protocol, modes (0,0) and (1,1). The device contains an 8-bit instruction register. The instruction set and associated op-codes are listed in Table 1. Reading data stored in the CAT15008/16 is accom– plished by simply providing the READ command and an address. Writing to the CAT15008/16, in addition to a WRITE command, address and data, also requires enabling the device for writing by first setting certain bits in a Status Register, as will be explained later. After a high to low transition on the CS ¯¯ input pin, the CAT15008/16 will accept any one of the six instruction op-codes listed in Table 1 and will ignore all other possible 8-bit combinations. The communication protocol follows the timing from Figure 3. Figure 2. Maximum Transient Duration without Causing a Reset Pulse vs. Overdrive Voltage Table 1: Instruction Set Instruction Opcode Operation WREN 0000 0110 Enable Write Operations WRDI 0000 0100 Disable Write Operations RDSR 0000 0101 Read Status Register WRSR 0000 0001 Write Status Register READ 0000 0011 Read Data from Memory WRITE 0000 0010 Write Data to Memory Figure 3. Synchronous Data Timing Note: Dashed Line = mode (1, 1) - - - - - - VALID IN VIH VIL tCSS VIH VIL VIH VIL VOH VOL HI-Z tSU tH tWH tWL tV tCS tCSH tHO tDIS HI-Z CS SCK SI SO tRI tFI RESET OVERDRIVE VTH - VCC [mV] TAMB = 25ºC CAT150xxM CAT150xxZ |
Аналогичный номер детали - CAT150081LWI-GT3 |
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Аналогичное описание - CAT150081LWI-GT3 |
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