LTC2959

12

Rev. 0

For more information www.analog.com

Control (B) 8-bit

Table: CONTROL Register (01h) (Read/Write)

BIT

NAME

OPERATION

DEFAULT

B[7:5]

ADC Mode

[000] Sleep; does not convert and does not update any registers. The coulomb counter is

still active.

[001] Smart Sleep; converts V, I, T every 52 seconds (tolerance < ±5%); if B[4] is high,

also converts GPIO. Updates registers and threshold comparators.

[010] Continuously convert V (2.5kS/s)

[011] Continuously convert I (2.5kS/s)

[100] Continuously convert, alternating between V and I

[101] Single-shot convert V, I and T; if B[4] is high, appends GPIO conversion after T.

Resets to [000] after completing these conversions.

[110] Continuously convert V, I and T; if B[4] is high, appends GPIO conversion after T

[111] Unused

[000]

B[4:3]

GPIO Configure

Configures the GPIO pin.

[00] Alert mode; logic output; Alert functionality enabled

[01] Charge Complete mode; logic input; driving a logic LOW sets the Accumulated

Charge Register to 0xFFFFFFFF.

[10] Analog input to ADC with ±97.5mV input voltage range

[11] Analog input to ADC with 0V to 1.56V input voltage range

[11]

B[2]

Configure Voltage Input

1: ADC uses SENSEN as voltage input.

0

B[1:0]

Reserved

Reserved

[00]

Coulomb Counter Configuration (C) 8-bit

Table: Coulomb Counter Configuration Register (02h) (Read/Write)

BIT

NAME

OPERATION

DEFAULT

C[7:6]

Coulomb Counter

Register.

[01]

Deadband

[00] 0µV (no deadband)

[01] 20µV

[10] 40µV

[11] 80µV

C[5:4]

Reserved

Reserved

[01]

C[3]

Do Not Count

Stops coulomb counting and prevents the Accumulated Charge Register from being

incremented/decremented.

0

C[2:0]

Reserved

Reserved

[000]

REGISTER MAP