Texas Instruments bq2013HEVM-001, User Manual, Page: 7 / 28

2-1
DM2013H—bq2013H-Based Circuit Module
DM2013H—bq2013H-Based Circuit Module
The DM2013H circuit module is a complete and compact example solution of
a bq2013H circuit for capacity monitoring of NiCd, NiMH, or lead-acid packs.
The DM2013H incorporates a bq2013H gas-gauge IC and all other compo-
nents necessary to accurately monitor and display the capacity of up to 14
nickel or 12 lead-acid cells.
The DM2013H includes five LEDs to display remaining capacity in 20% incre-
ments of the programmed capacity. The LEDs are activated with the onboard
push-button switch.
Contacts on the DM2013H provide direct connection to the battery stack
(BAT+, BAT–), the sense resistor (BAT–, GND), and the serial communica-
tions port (HDQ). The system load and charger connect across BAT+ and
PACK–.
The ACC input provides an option to enable the LED display with an external
(active low) signal, as from a microcontroller.
Topic Page
2.1 Pin Descriptions 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Programming 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2