Product Info

5.1 eFlash Memory
The internal flash memory provides 16Mb of internal code and data storage. For improved performance, the internal flash memory has 45ns access
time and is organised as 64-bit wide.
5.2 Serial Quad I/O Flash (Optional)
LM746 supports serial flash. This enables additional data storage areas for device specific data. LM746 use the Serial Quad I/O Flash 4Mb Flash.
Figure 4.2.1: Battery Charger External Mode Typical Configuration
LM746 Bluetooth® Dual Mode Audio Module
Standalone (With Embedded Bluetooth® 5 Compliant Stack)
4. Battery Charger Continued...
5. Flash Memory
LM746 capacitive touch sensor interface features:
-Support for up to 6 capacitive touch sensing electrodes
-Printed on the PCB
-Made from flex PCB
-Configuration for individual buttons
-Configuration for a wipe-type arrangement where 2 or more pads sense taps at each end or a wipe from one side to the other
-Operates in deep sleep and is a programmable source for wake-up
6. Capacitive Touch Sensor
Figure 4.2.2: Optional Ancilliary Circuits
In Figure 4.2.2, Optional fast charge,400mΩ = 500m.
Connect VBAT_SENSE to VBAT if not using this circuit.
C105
Q100
BCX51
4u7
R108
220mR
VBAT
VBAT_SENSE
VBUS
CHG_EXT 1
23
R104
1%
400mR
VBAT
R1
220mΩ
BAT 1
Li+ Cell
+
-
C1
4.7uF
VBAT_SENSE
R
sense
CHG_EXT
VCHG
TR 1
External Pass Device
Part No
Product
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LM746
LM746
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