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CAT1024LI-28 Datasheet(PDF) 3 Page - Catalyst Semiconductor |
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CAT1024LI-28 Datasheet(HTML) 3 Page - Catalyst Semiconductor |
3 / 20 page CAT1024, CAT1025 © 2007 Catalyst Semiconductor, Inc. 3 Doc. No. 3008 Rev. N Characteristics subject to change without notice PIN DESCRIPTION RESET/RESET ¯¯¯¯¯¯: RESET OUTPUTs (RESET CAT1025 Only) These are open drain pins and RESET ¯¯¯¯¯¯ can be used as a manual reset trigger input. By forcing a reset condition on the pin the device will initiate and maintain a reset condition. The RESET pin must be connected through a pull-down resistor, and the RESET ¯¯¯¯¯¯ pin must be connected through a pull-up resistor. SDA: SERIAL DATA ADDRESS The bidirectional serial data/address pin is used to transfer all data into and out of the device. The SDA pin is an open drain output and can be wire-ORed with other open drain or open collector outputs. SCL: SERIAL CLOCK Serial clock input. MR ¯¯¯: MANUAL RESET INPUT Manual Reset input is a debounced input that can be connected to an external source for Manual Reset. Pulling the MR input low will generate a Reset condition. Reset outputs are active while MR ¯¯¯ input is low and for the reset timeout period after MR ¯¯¯ returns to high. The input has an internal pull up resistor. WP (CAT1025 Only): WRITE PROTECT INPUT When WP input is tied to VSS or left unconnected write operations to the entire array are allowed. When tied to VCC, the entire array is protected. This input has an internal pull down resistor. PIN FUNCTION Pin Name Function NC No Connect RESET ¯¯¯¯¯¯ Active Low Reset Input/Output VSS Ground SDA Serial Data/Address SCL Clock Input RESET Active High Reset Output (CAT1025 only) VCC Power Supply WP Write Protect (CAT1025 only) MR ¯¯¯ Manual Reset Input OPERATING TEMPERATURE RANGE Industrial -40ºC to 85ºC Extended -40ºC to 125ºC CAT10XX FAMILY OVERVIEW Device Manual Reset Input Pin Watchdog Watchdog Monitor Pin Write Protection Pin Independent Auxiliary Voltage Sense RESET: Active High and LOW EEPROM CAT1021 SDA 2k CAT1022 SDA 2k CAT1023 WDI 2k CAT1024 2k CAT1025 2k CAT1026 2k CAT1027 WDI 2k For supervisory circuits with embedded 16k EEPROM, please refer to the CAT1161, CAT1162 and CAT1163 data sheets. |
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