SMB139 SUMMIT Microelectronics, Inc:, SMB139 Datasheet - Page 19

• Manufacturer Part Number: SMB139
• Description: ? Summit Microelectronics, Inc. 2005 ? 757 N. Mary Avenue ? Sunnyvale Ca 94085 ? Phone [phone] ? Fax [phone] Http //www.summitmicro.com/ 2121 3.0 6/19/2008 1 Programmable Linear Battery Charger
• Manufacturer: SUMMIT Microelectronics, Inc:

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.
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 below
Table 4 – Charge current – 8-bit (address: 00h) – Non-Volatile & Volatile (mirror)
Note 4: Never Write to Reserved bits.
Note 5: Charge current can be limited by internal current limit under certain conditions.
Summit Microelectronics, Inc
CONFIGURATION REGISTERS
Bit7
Bit7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Bit6
Bit6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Bit5
Bit5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bit4
Bit4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Bit3
Bit3
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2121 3.0 6/19/2008
Bit2
Bit2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Bit1
Bit1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Locations 31-3F contain volatile status and
Bit0
Bit0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Fast Charge Current
Pre-charge current
4
.
104mA
116mA
128mA
140mA
152mA
164mA
176mA
188mA
200mA
212mA
33mA
37mA
38mA
39mA
80mA
92mA
23mA
27mA
32mA
36mA
41mA
45mA
50mA
54mA
59mA
63mA
68mA
72mA
77mA
81mA
86mA
90mA
SMB139
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