MBF110PFW1STG Ver la hoja de datos (PDF) - Fujitsu

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MBF110PFW1STG

Solid-State Fingerprint Sensor

Fujitsu 

Solid-State Fingerprint Sensor

CAH (A3-A0 Address 0011) Write Only

High Order Column Address Register

Bit 0 of this register and CAL form the 9-bit Column Address

Register that selects a cell from the current row for digitizing.

The user should wait until the row capture is completed before

writing to CAH.

MSB

BIT7

R

BIT6

T

BIT5

–

BIT4

–

BIT3

–

BIT2

–

BIT1

–

LSB

BIT0

CA8

Bit Number

Bit Name

Function

[7:1]

–

Reserved, write 0 to these bits.

0

CA8

MSB of Column Address Register

DTR (A3-A0 Address 0100) Write Only

Discharge Time Register

MSB

BIT7

BIT6

BIT5

BIT4

inary BIT3

BIT2

BIT1

LSB

BIT0

PD

Bit Number

7

T6

Bit Name

PD

T5

T4

T3

T2

T1

T0

lim Function

Power down chip.

e PD=0, Chip in Normal Mode

rPD=1, Chip in Low Power Mode

PSelects the count to be loaded into the Discharge Timer. Discharge time is selected in increments of the

oscillator period. Discharge Time is defined as the period between the sampling and holding of the pre-charged

sensor cell to the sampling and holding of the discharging sensor cell. The Discharge Time can be calculated

[6:0]

T[6:0]

from the following equation:

Discharge Time = T[6:0] * tOSC

6 Fujitsu Microelectronics, Inc.

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