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CY14B101I-SFXIT Datasheet(PDF) 3 Page - Cypress Semiconductor |
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CY14B101I-SFXIT Datasheet(HTML) 3 Page - Cypress Semiconductor |
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3 / 42 page  CY14C101I CY14B101I CY14E101I Document Number: 001-54391 Rev. *K Page 3 of 42 Pinout Figure 1. 16-pin SOIC pinout INT/SQW WP V CAP 1 2 3 4 5 6 7 8 9 10 11 12 13 NC 16 15 14 V CC A2 SDA SCL A1 HSB NC Top View not to scale VRTCbat Xout Xin V RTCcap V SS Pin Definitions Pin Name I/O Type Description SCL Input Clock: Runs at speeds up to a maximum of fSCL SDA Input/Output I/O: Input/output of data through I2C interface. Output: Is open-drain and requires an external pull-up resistor. WP Input Write Protect: Protects the memory from all writes. This pin is internally pulled LOW and hence can be left open if not connected. A2-A1 Input Slave Address: Defines the slave address for I2C. These pins are internally pulled LOW and hence can be left open if not connected. HSB Input/Output Hardware STORE Busy: Output: Indicates busy status of nvSRAM when LOW. After each Hardware and Software STORE operation HSB is driven HIGH for a short time (tHHHD) with standard output high current and then a weak internal pull-up resistor keeps this pin HIGH (External pull-up resistor connection optional). Input: Hardware STORE implemented by pulling this pin LOW externally. VCAP Power supply AutoStore capacitor: Supplies power to the nvSRAM during power loss to STORE data from the SRAM to nonvolatile elements. If not required, AutoStore must be disabled and this pin left as No Connect. It must never be connected to ground. VRTCcap [3] Power supply Capacitor backup for RTC: Left unconnected if VRTCbat is used. VRTCbat [3] Power supply Battery backup for RTC: Left unconnected if VRTCcap is used. Xout [3] Output Crystal output connection Xin [3] Input Crystal input connection INT/SQW [3] Output Interrupt output/calibration/square wave. Programmable to respond to the clock alarm, the watchdog timer, and the power monitor. Also programmable to either active HIGH (push or pull) or LOW (open drain). In Calibration mode, a 512 Hz square wave is driven out. In Square Wave mode, the user may select a frequency of 1 Hz, 512 Hz, 4096 Hz, or 32768 Hz to be used as a continuous output. NC No connect No connect. This pin is not connected to the die. VSS Power supply Ground VCC Power supply Power supply Note 3. Left unconnected if RTC feature is not used. |
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