TMP006_1107 Datasheet, PDF (12/21 Pages) Texas Instruments – Infrared Thermopile Sensor in Chip-Scale Package

TMP006
SBOS518A – MAY 2011 – REVISED JULY 2011
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CONFIGURATION REGISTER
Table 8 describes the Configuration Register. This register determines the operational modes, conversion rate,
DRDY control, initiates a single conversion, performs a software reset, or puts the device into shutdown mode.
This register is read/write, and the pointer address is 02h.
POINTER
(HEX)
02h
REGISTER
Configuration
Reset value
Table 8. Configuration Register (Read/Write)
D15 D14 D13 D12 D11 D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
RST MOD2 MOD1 MOD0 CR2 CR1 CR0 EN DRDY 0
0
0
0
0
0
0
0
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
Bit [15]
Bits [14:12]
Bits [11:9]
Bit [8]
Bit [7]
Bits [6:0]
RST: Software reset bit
0 = Normal operation, this bit self clears
1 = Software reset
MOD[2:0]: Mode of operation
000 = Power-down
111 = Sensor and ambient continuous conversion (MOD)
CR[2:0]: ADC conversion rate
See Table 9.
EN: DRDY enable bit
0 = DRDY pin disabled
1 = DRDY pin enabled
DRDY: Data ready bit
0 = Conversion in progress
1 = Object voltage and ambient temperature results are ready to read. A temperature or sensor voltage read or a write to
the Configuration Register is required to clear the condition.
Unused [6:0]
The TMP006 can operate in two modes: continuous and shutdown. A software reset function is also available.
Selecting the desired operating mode is done by writing to the Configuration Register conversion mode select
bits MOD[2:0]. The duration of the analog-to-digital (A/D) conversion is determined by the conversion rate bits
CR[2:0] and is listed in Table 9. Continuous mode, on the other hand, performs an A/D conversion followed by a
low-power delay in order to reduce the average power consumption. Multiple options for the conversion time and
delay time are available in order to select the desired power/noise performance. Initiating power-down has an
immediate effect; it aborts the current conversion and puts the device into a low-power shutdown mode. RST, or
software reset, is also immediate and initializes all memory locations with the respective reset values.
Table 9. Conversion Rate
CR2
0
0
0
0
1
CR1
0
0
1
1
0
CR0
0
1
0
1
0
CONVERSION RATE
(conv/sec)
4
2
1
0.5
0.25
TOTAL NUMBER OF
AVERAGED
SAMPLES
1
2
4
8
16
AVERAGE I_Q (μA)
240
240
240
240
240
PEAK-PEAK NOISE
OF THE T_Object
RESULT (°C)
0.5
0.35
0.25 (default)
0.18
0.125
12
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