STMPE821_09 STMICROELECTRONICS [STMicroelectronics], STMPE821_09 Datasheet - Page 4

• Manufacturer Part Number: STMPE821_09
• Description: 8-channel capacitive touch key controller
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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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. . . . . . . . . . . . . . . . 40
Ramps with programmable brightness, ON/OFF period and repetition . . . . . . . . . . . . . . . 41
Fixed brightness output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Package outline for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . 50
Footprint recommendations for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . 51
Carrier tape for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . . . . 52
Reel information for QFN16 (2.6 x 1.8 x 0.55 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . 53
STMPE821