Low-Power Two-Channel Sensor

Signal Processor

_______________________________________________________________________________________

7

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DIGITAL INPUT (GPIO1, GPIO2, SCLK, DI, CKSEL, CKIO,

CS)

Input High Threshold Voltage

0.8 x

V

Input Low Threshold Voltage

0.2 x

V

Input Hysteresis

0.2

V

-50

Input Leakage Current

50

µA

Input Capacitance

5pF

DIGITAL OUTPUT (GPIO1, GPIO2, DO, CKIO)

GPIO1, GPIO2, DO

4.9

∞

CKIO (Note 10)

4.9

GPIO1, GPIO2, DO

4.6

Output Voltage High

CKIO (Note 10)

4.6

V

GPIO1, GPIO2, DO

0.1

∞

CKIO (Note 10)

0.1

GPIO1, GPIO2, DO

0.4

Output Voltage Low

CKIO (Note 10)

0.4

V

FLASH MEMORY

Maximum Erase Cycles

(Notes 11, 12)

10K

Cycles

Minimum Erase Time

(Notes 11, 12)

4.2

ms

Minimum Write Time

(Notes 11, 12)

80

µs

ELECTRICAL CHARACTERISTICS (continued)

Note 1:

Note 2:

All modules are off, except internal reference, oscillator, VBG buffer, and power-on reset (POR). ISRC is open.

Note 3:

The CPU and ADC are not on at the same time. The ADC and CPU currents are not additive.

Note 4:

Note 5:

For gains above 240, an additional digital gain can be provided by the CPU.

Note 6:

The PWM input data is the 12-bit left-justified data in the 16-bit input field.

Note 7:

PWM gain error measured as:

Note 8:

The Internal Reference Voltage has a nominal value of 5V (4

Note 9:

Input-referred offset error is the ADC Offset Error divided by the PGA gain.

Note 10: When the CKIO pin is configured in output mode to observe the internal oscillator signal, the total current is above the

specified limits.

Note 12: Allow a minimum elapsed time of 4.2ms when executing a FLASH erase command, before sending any other command.

Allow a minimum elapsed time of 80µs between FLASH write commands.

GE

PWM

F

Xh

PWM

Xh

PWM

OUT

OUT

=

()

×

00

100

3584

100%