Datasheet Texas Instruments BQ4285 — 数据表

制造商	Texas Instruments
系列	BQ4285

具有114x8 NVSRAM和NVSRAM控制的RTC IC

数据表

PDF, 1.6 Mb, 修订版: A, 档案已发布: May 26, 2004

	BQ4285P-SB2	BQ4285S-SB2	BQ4285S-SB2G4	BQ4285S-SB2TR
Lifecycle Status	Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect)	Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect)	Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect)	Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect)
Manufacture's Sample Availability	No	No	No	No

	BQ4285P-SB2	BQ4285S-SB2	BQ4285S-SB2G4	BQ4285S-SB2TR
N	1	2	3	4
Pin	24	24	24	24
Package Type	N	DW	DW	DW
Industry STD Term	PDIP	SOIC	SOIC	SOIC
JEDEC Code	R-PDIP-T	R-PDSO-G	R-PDSO-G	R-PDSO-G
Package QTY	15	25	25	2000
Carrier	TUBE	TUBE	TUBE	LARGE T&R
Device Marking	4285P	4285S	-SB2	4285S
Width (mm)	13.71	7.5	7.5	7.5
Length (mm)	31.75	15.4	15.4	15.4
Thickness (mm)	4.57	2.35	2.35	2.35
Pitch (mm)	2.54	1.27	1.27	1.27
Max Height (mm)	5.08	2.65	2.65	2.65
Mechanical Data	下载	下载	下载	下载

	BQ4285P-SB2	BQ4285S-SB2	BQ4285S-SB2G4	BQ4285S-SB2TR
RoHS	Compliant	Compliant	Compliant	Compliant
Pb Free	Yes

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U-502 Time-Base Oscillator for RTC IC
PDF, 313 Kb, 档案已发布: Sep 5, 1999
Time-Base Oscillator for RTC ICs.The operation of the time-base oscillator is critical to the timekeeping functions of the bq3285, bq4285, and bq4845 series of real-time-clocks (RTCs). This application note describes some basic characteristics of the piezoelectric crystal and the on-chip crystal oscillator circuitry designed into these RTC series. It also includes suggestions for achieving timek

系列: BQ4285 (4)