STMPE821QTR STMicroelectronics, STMPE821QTR Datasheet - Page 4

• Manufacturer Part Number: STMPE821QTR
• Description: IC CTLR TOUCH KEY 8CH CAP 16-QFN
• Manufacturer: STMicroelectronics
• Type: Capacitiver

Specifications of STMPE821QTR

• Number Of Inputs/keys: 8 Key
• Data Interface: I²C
• Voltage - Supply: 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Voltage Supply Source: Single Supply
• Resolution: 7 bit to 10 bit
• Interface Type: I2C
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Channels: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sampling Rate (per Second): -
• Resolution (bits): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8826-2

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Functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
STMPE821 pin assignment (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
STMPE821 operating states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power using the internal regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Read and write modes (random and sequential) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Interrupt controller module block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Pulses with programmable brightness, ON/OFF period and repetition. . . . . . . . . . . . . . . . 35
Ramps with programmable brightness, ON/OFF period and repetition . . . . . . . . . . . . . . . 36
Fixed brightness output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Package outline for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . 45
Footprint recommendations for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . 46
Carrier tape for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . . . . 47
Reel information for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . 48
Doc ID 14478 Rev 5
STMPE821