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Version 1.3 | 25 Sep 2017 | 31007AEN

PixArt Imaging Inc. http://www.pixart.com

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PAH8002EP-2P Product Datasheet

Low Power Optical Heart Rate Detection Chip

PixArt Imaging Inc.

1.3

Signal Description

Figure 2. Pin Configuration

Table 1. Signal Pins Description

Pin No.

Signal Name

Type

Description

Functional Group:

Power Supplies

1

VDD_LED01

Input

IR/Green LED Anode. Provide VDDM supply voltage

2

VDDAY

Input

Analog circuit power regulator input. Connect to VDDA28 or provide 2.8V voltage

3

VDDA28

Output

Analog circuit power regulator output. Must connect 1µF capacitor to GND

4

VDDD

Output

Digital circuit power regulator output. Must connect 1µF capacitor to GND

5

VBGP

Output

Reference regulator output. Must connect 0.1µF capacitor to GND

7

VDDM

Input

Power supply (3.3 - 3.6V) for internal power regulator

8

VSSLED

GND

LED Ground

15

VSSD

GND

Digital Ground

19

VDDIO

Input

I/O Power Supply (1.62 - 3.6V)

20

VSSA

GND

Analog Ground

s22

VDD_LED2

Input

Green LED Anode. Provide VDDM supply voltage

Functional Group:

Interface

11

SPI_SDI_I2C_SDA

BiDir

4-wire SPI: Data input

12

SPI_SDO

Output

4-wire SPI: Data output

13

SPI_CSN

Input

4-wire SPI: Chip Select. Active Low

14

SPI_SCLK_I2C_SCL

Input