Datasheet

bq500410A
www.ti.com SLUSB96 – NOVEMBER 2012
Table 1. bq500410A Pin Description
PIN
I/O DESCRIPTION
NO. NAME
1 COIL_PEAK I Input from peak detect circuit
2 T_SENSE Sensor input. Device shuts down when below 1 V. If not used, keep above 1 V by simply
I
connecting to 3.3-V supply
3 AD03 This pin can be either connected to GND or left open. Connecting to GND can improve
I
layout grounding
4 AD08 I Reserved. Connect to 3.3-V supply
5 RESET I Device reset. Use 10-kΩ to 100-kΩ pull-up resistor to 3.3-V supply
6 FOD FOD read pin. Leave open unless PMOD and FOD thresholds need to be different. It
O
controls the FOD threshold resistor read at startup.
7 MSP_RST/LED1 A dual function pin. MSP – RST provides serial communication to the external supervisor.
I LED1 -- If external MSP430 is not used, connect to a (green) LED via 470-Ω resistor for
status indication. Grounding pin 25 determines this pin's function.
8 MSP_MISO/LED2 A dual function pin. MSP – MISO provided serial communication to the external supervisor.
I LED2 -- If external MSP430 is not used, connect to a (red) LED via 470-Ω resistor for status
indication. Grounding pin 25 determines this pin's function.
9 MSP_TEST I MSP – Test, If external MSP430 is not used, leave this pin open
10 PMB_CLK I/O 10-kΩ pull-up resistor to 3.3-V supply. I
2
C/PMBus is for factory use only.
11 PMB_DATA I/O 10-kΩ pull-up resistor to 3.3-V supply. I
2
C/PMBus is for factory use only.
12 DPWM_A O PWM Output to half bridge driver. Switching dead times must be externally generated.
13 PMOD PMOD read pin. Leave open unless PMOD and FOD thresholds need to be different. It
O
controls the PMOD threshold resistor read at startup.
14 MSP_SYNC O MSP SPI_SYNC, If external MSP430 is not used, leave this pin open
15 COIL 1.1 O Enables the first coil drive train and COMM signal selector
16 COIL 1.2 O Enables the second coil drive train and COMM signal selector
17 COIL 1.3 O Enables the third coil drive train and COMM signal selector
18 MSP_CLK I/O MSP430 JTAG_CLK, SPI_CLK. Used for boot loading the MSP430 supervisor
19 RESERVED O Reserved, leave this pin open.
20 RESERVED I Reserved, connect to GND.
21 DOUT_TX I Reserved, leave this pin open
22 DOUT_RX I Reserved, leave this pin open
23 BUZ_AC O AC buzzer output. A 400-ms, 4-kHz AC pulse train when charging begins
24 BUZ_DC DC buzzer output. A 400-ms DC pulse when charging begins. This could also be connected
O
to an LED via 470-Ω resistor.
25 MSP_MOSI/LPWR_EN MSP-TDI, SPI-MOSI, Low Standby Power Supervisor Enable. Connect to GND if separate
I/O
MSP430 low power supervisor is not used.
26 MSP_RDY I/O MSP_RDY, MSP430 Programmed Indication
27 RESERVED I/O Reserved, leave this pin open
28 RESERVED I/O Reserved, leave this pin open
29 RESERVED I/O Reserved, leave this pin open
30 RESERVED I/O Reserved, leave this pin open
31 RESERVED I/O Reserved, connect 10-kΩ pull-down resistor to GND. Do not leave open.
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