Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

BQ4802YDWG4 Datasheet(PDF) 6 Page - Texas Instruments

Part # BQ4802YDWG4
Description  PARALLEL REAL-TIME CLOCK WITH CPU SUPERVISOR
Download  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ4802YDWG4 Datasheet(HTML) 6 Page - Texas Instruments

Back Button BQ4802YDWG4 Datasheet HTML 2Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 3Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 4Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 5Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 6Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 7Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 8Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 9Page - Texas Instruments BQ4802YDWG4 Datasheet HTML 10Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 26 page
background image
bq4802Y
bq4802LY
SLUS464C – AUGUST 2000 – REVISED JUNE 2002
www.ti.com
6
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
WDI
23
I
WDIis a three-level input. If WDI remains either high or low for longer than the watchdog time-out period (1.5-s default),
WDO goes low. WDO remains low until the next transition at WDI. Leaving WDI unconnected disables the watchdog
function. WDI connects to an internal voltage divider between VOUT and VSS, which sets it to mid-supply when left
unconnected.
WDO
4
WDO goes low if WDI remains either high or low longer than the watchdog time-out period. WDO returns high on the
next transition at WDI. WDO remains high if WDI is unconnected.
WE
27
WE provides the write control for the RTC memory locations.
X1
2(1)
Crystal connection
X2
3(1)
y
FUNCTIONAL BLOCK DIAGRAM
Figure 3 is a block diagram of the bq4802Y/bq4802LY. The following sections describe the bq4802Y/bq4802LY
functional operation including clock interface, data-retention modes, power-on reset timing, watchdog timer
activation, and interrupt generation.
Figure 3. Block Diagram
Time-
Base
Oscillator
X1
X2
÷8
÷64
÷64
16:1 MUX
4
Control/Status
Registers
Clock/Calendar
Update
Interrupt
Generator
INT
Watchdog
Transition
Detector
WDO
Power-Fail
Control, Battery
Switchover and
Reset Circuits
VOUT
RST
CEOUT
VCC
BC
CEIN
WDI
Clock/Calendarand
Alarm Registers
User Buffer
(16 Bytes)
µP Bus
Interface
CS
OE
WE
A0 – A3
DQ0 – DQ7


Similar Part No. - BQ4802YDWG4

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
BQ4802Y TI-BQ4802Y Datasheet
301Kb / 23P
[Old version datasheet]   PARALLEL REAL-TIME CLOCK WITH CPU SUPERVISOR AND EXTERNAL SRAM NONVOLATILE MEMORY BACKUP
More results

Similar Description - BQ4802YDWG4

ManufacturerPart #DatasheetDescription
logo
Xicor Inc.
X1228 XICOR-X1228 Datasheet
569Kb / 31P
   Real Time Clock/Calendar/CPU Supervisor with EEPROM
logo
Intersil Corporation
X1228 INTERSIL-X1228 Datasheet
430Kb / 29P
   Real Time Clock/Calendar/CPU Supervisor with EEPROM
logo
Xicor Inc.
X1227 XICOR-X1227 Datasheet
442Kb / 28P
   Real Time Clock/Calendar/CPU Supervisor with EEPROM
logo
Intersil Corporation
X1228 INTERSIL-X1228_06 Datasheet
421Kb / 29P
   Real Time Clock/Calendar/CPU Supervisor with EEPROM
X1286 INTERSIL-X1286_06 Datasheet
473Kb / 25P
   Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM
X1286V14T1 INTERSIL-X1286V14T1 Datasheet
482Kb / 25P
   Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM
April 14, 2006
logo
Texas Instruments
BQ4802LY TI-BQ4802LY Datasheet
301Kb / 23P
[Old version datasheet]   PARALLEL REAL-TIME CLOCK WITH CPU SUPERVISOR AND EXTERNAL SRAM NONVOLATILE MEMORY BACKUP
BQ4802LY TI-BQ4802LY_13 Datasheet
936Kb / 26P
[Old version datasheet]   PARALLEL REAL-TIME CLOCK WITH CPU SUPERVISOR AND EXTERNAL SRAM NONVOLATILE MEMORY BACKUP
BQ4802LYPW TI1-BQ4802LYPW Datasheet
936Kb / 26P
[Old version datasheet]   PARALLEL REAL-TIME CLOCK WITH CPU SUPERVISOR AND EXTERNAL SRAM NONVOLATILE MEMORY BACKUP
logo
Intersil Corporation
X1286 INTERSIL-X1286 Datasheet
365Kb / 25P
   Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM X1286
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com