
16-1
ML63326 User's Manual
Chapter 16 Battery Low Detect Circuit (BLD)
16
Chapter 16 Battery Low Detect Circuit (BLD)
16.1 Overview
The ML63326 contains a battery low detect circuit (BLD).
The battery low detect circuit detects when the battery voltage (supply voltage V
DD
) falls
below the judgment voltage value. Three levels of judgment voltage can be selected by the
BLDCON bits.
Judgment voltage values (Ta = 25
°
C): 2.00
±
0.10 V, 2.20
±
0.10 V, 2.40
±
0.10 V
!
Note:
•
When verifying BLD operation, the operation must be verified with an evaluation sample
device.
The development support tool (EASE63180) does not support BLD.
16.2 Battery Low Detect Circuit Configuration
The battery low detect circuit consists of a judgment circuit and a judgment voltage select
circuit. Figure 16-1 shows the circuit configuration.
Figure 16-1 Battery Low Detect Circuit
V
DD
Judgment circuit
Judgment voltage
select circuit
ENBL
BLDF
Read BLDCON
4
Data bus
BLDCON
3
Q
I/O
Содержание ML63326
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