X1205 datasheet(13/22 Pages) XICOR

13 / 22 page

X1205 – Preliminary Information

REV 1.0.9 8/29/02

Characteristics subject to change without notice.

13 of 22

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Notes: (1)

The device enters the Active state after any start, and remains active: for 9 clock cycles if the Device Select Bits in the Slave

Address Byte are incorrect or until 200nS after a stop ending a read or write operation.

(2)

The device enters the Program state 200nS after a stop ending a write operation and continues for tWC.

(3)

The device goes into the Timekeeping state 200nS after any stop, except those that initiate a nonvolatile write cycle; tWC after a

stop that initiates a nonvolatile write cycle; or 9 clock cycles after any start that is not followed by the correct Device Select Bits in

the Slave Address Byte.

(4)

For reference only and not tested.

(5)

VIL = VCC x 0.1, VIH = VCC x 0.9, fSCL = 400KHz

(6)

VCC = 0V

(7)

VBACK = 0V

(8)

VSDA = VSCL=VCC, Others = GND or VCC

(9)

VSDA =VSCL=VBACK, Others = GND or VBACK

(10) VSDA = GND or VCC, VSCL = GND or VCC

(11) IOL = 3.0mA at 5V, 1mA at 2.7V

(13) Threshold voltages based on the higher of Vcc or Vback.

(14) Using recommended crystal and oscillator network applied to X1 and X2 (25°C).

(15) Typical values are for TA = 25°C

Capacitance TA = 25°C, f = 1.0 MHz, VCC = 5V

Notes: (1)

This parameter is not 100% tested.

(2)

The input capacitance between x1 and x2 pins can be varied between 5pF and 19.75pF by using analog trimming registers

AC CHARACTERISTICS

AC Test Conditions

Figure 14. Standard Output Load for testing the device with VCC = 5.0V

Symbol

Parameter

Max.

Units

Test Conditions

COUT

(1)

Output Capacitance (SDA, IRQ)10

VOUT = 0V

CIN

(1)

Input Capacitance (SCL)

VIN = 0V

Input Pulse Levels

VCC x 0.1 to VCC x 0.9

Input Rise and Fall Times

10ns

Input and Output Timing

Levels

VCC x 0.5

Output Load

Standard Output Load

SDA

1533

Ω

100pF

5.0V

For VOL= 0.4V

and IOL = 3 mA

Equivalent AC Output Load Circuit for VCC = 5V

1316

Ω

5.0V

IRQ

100pF

806

Ω

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