XR20V2172 Datasheet, PDF (41/51 Pages) Exar Corporation – TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER

REV. P1.0.1
PRELIMINARY
XR20V2172
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
AC ELECTRICAL CHARACTERISTICS - UART CLOCK
Unless otherwise noted: TA=-40^o to +85^oC, Vcc=3.3 - 5.5V
SYMBOL
XTAL1
ECLK
T_ECLK
UART Crystal Oscillator
UART External Clock
External Clock Time Period
FIGURE 15. CLOCK TIMING
PARAMETER
T_ECLK
LIMITS
MIN
MAX
24
64
7
UNIT
MHz
MHz
ns
External
Clock
VIHCK
VILCK
T_ECH
T_ECL
41