SMB139 Ver la hoja de datos (PDF) - Summit Microelectronics
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SMB139 Datasheet PDF : 27 Pages
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SMB139
CONFIGURATION REGISTERS
The following tables describe the user-programmable registers of the SMB139 programmable battery charger.
Locations 00-0F are non-volatile, EEPROM registers; however, registers 00-07, which contain the battery charging
parameters, may also be configured to be programmable in RAM. Locations 31-3F contain volatile status and
command registers. To lock all of the configuration registers, set 0E[2]=1; please note that this operation cannot be
undone. To allow volatile access to locations 00-07, set 0E[0]=1; then after every power-on, 31[7] must also be set
high. It is prohibited to write to any location, not specifically mentioned in the tables below4.
Table 4 – Charge current – 8-bit (address: 00h) – Non-Volatile & Volatile (mirror)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0
0
0
0
X
X
X
X
0
0
0
1
X
X
X
X
0
0
1
0
X
X
X
X
0
0
1
1
X
X
X
X
0
1
0
0
X
X
X
X
0
1
0
1
X
X
X
X
0
1
1
0
X
X
X
X
0
1
1
1
X
X
X
X
1
0
0
0
X
X
X
X
1
0
0
1
X
X
X
X
1
0
1
0
X
X
X
X
1
0
1
1
X
X
X
X
1
1
0
0
X
X
X
X
1
1
0
1
X
X
X
X
1
1
1
0
X
X
X
X
1
1
1
1
X
X
X
X
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
X
X
X
X
0
0
0
0
X
X
X
X
0
0
0
1
X
X
X
X
0
0
1
0
X
X
X
X
0
0
1
1
X
X
X
X
0
1
0
0
X
X
X
X
0
1
0
1
X
X
X
X
0
1
1
0
X
X
X
X
0
1
1
1
X
X
X
X
1
0
0
0
X
X
X
X
1
0
0
1
X
X
X
X
1
0
1
0
X
X
X
X
1
0
1
1
X
X
X
X
1
1
0
0
X
X
X
X
1
1
0
1
X
X
X
X
1
1
1
0
X
X
X
X
1
1
1
1
Note 4: Never Write to Reserved bits.
Note 5: Charge current can be limited by internal current limit under certain conditions.
Fast Charge Current
33mA
37mA
38mA
39mA
80mA
92mA
104mA
116mA
128mA
140mA
152mA
164mA
176mA
188mA
200mA
212mA
Pre-charge current
23mA
27mA
32mA
36mA
41mA
45mA
50mA
54mA
59mA
63mA
68mA
72mA
77mA
81mA
86mA
90mA
Summit Microelectronics, Inc
2121 3.0 6/19/2008
19
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