參數(shù)資料
型號(hào)： 1339-2DVGI
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝： 3 MM, ROHS COMPLIANT, MSOP-8
文件頁(yè)數(shù)： 2/26頁(yè)
文件大小： 330K
代理商： 1339-2DVGI
IDT1339
REAL-TIME CLOCK WITH SERIAL I2C INTERFACE
RTC
IDT
REAL-TIME CLOCK WITH SERIAL I2C INTERFACE
10
IDT1339
REV N 060311
Trickle Charger Register (10h)
Programmable Trickle Charger
The simplified “Programmable Trickle Charger” schematic shows the basic components of the trickle charger. The
trickle-charge select (TCS) bits (bits 4 to 7) control the selection of the trickle charger. To prevent accidental enabling, only
a pattern of 1010 on the TCS bits enables the trickle charger. All other patterns disable the trickle charger. The trickle
charger is disabled when power is first applied. The diode-select (DS) bits (bits 2 and 3) select whether or not a diode is
connected between VCC and VBACKUP. The ROUT bits (bits 0 and 1) select the value of the resistor connected between VCC
and VBACKUP. Table 6 shows the bit values.
Table 6. Trickle Charger Register (10h)
Warning: The ROUT value of 250
Ω must not be selected whenever V
CC is greater than 3.63 V.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Function
TCS3
TCS2
TCS1
TCS0
DS1
DS0
ROUT 1
ROUT 0
XX
X
0
X
Disabled
XX
X
1
X
Disabled
XX
X
0
Disabled
1
0
1
0
1
0
1
No diode, 250
Ω resistor
1
0
1
0
1
0
1
One diode, 250
Ω resistor
1
0
1
0
1
0
No diode, 2k
Ω resistor
1
0
1
0
1
0
1
0
One diode, 2k
Ω resistor
1
0
1
0
1
No diode, 4k
Ω resistor
1
0
1
0
1
0
1
One diode, 4k
Ω resistor
0
Initial power-up values
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