- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372527 > X1209 Real Time Clock/Calendar with Event/Timestamp Detection & Alarms(帶有事件/時間標(biāo)記檢測與報警功能的實時時鐘/日歷) PDF資料下載
參數(shù)資料
| 型號： | X1209 |
| 英文描述： | Real Time Clock/Calendar with Event/Timestamp Detection & Alarms(帶有事件/時間標(biāo)記檢測與報警功能的實時時鐘/日歷) |
| 中文描述： | 實時時鐘/日歷的事件/時間戳檢測 |
| 文件頁數(shù)： | 2/27頁 |
| 文件大小： | 511K |
| 代理商： | X1209 |
第1頁當(dāng)前第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁
2 of 27
REV 3.0 2/11/04
www.xicor.com
Preliminary Information
X1209
PIN DESCRIPTIONS
PIN ASSIGNMENTS
Pin Number
MSOP
1
Symbol
X1
Brief Description
FCP
X1.
tal is used with the X1209 to supply a timebase for the real time clock. The device can
also be driven directly from a 32.768kHz source. Internal compensation circuitry is includ-
ed to form a complete oscillator circuit with accuracy over the operating temperature range
from -40C to +85C. The oscillator compensation network can be used either calibrate the
crystal pull-over accuracy over temperature during manufacturing calibration or used with
external temperature sensor and microcontroller for active compensation.
X2.
The X2 pin is the output of an inverting amplifier. An external 32.768kHz quartz
crystal is used with the X1209 to supply a timebase for the real time clock. The device
can also be driven directly from a 32.768kHz source. Internal compensation circuitry is in-
cluded to form a complete oscillator circuit with accuracy over the operating temperature
range from -40C to +85C. The oscillator compensation network can be used either cali-
brate the crystal pull-over accuracy over temperature during manufacturing calibration or
used with external temperature sensor and microcontroller for active compensation.
V
BAT
.
This input provides a backup supply voltage to the device. V
to the device in the event the V
CC
supply fails. This pin can be connected to a battery,
a Supercap or tied to ground if not used.
Chip ground pin
Event Input (EVIN).
The EVIN is an input pin that is used to detect an externally mon-
itored event. When a high signal is present at the EVIN pin an “event” is detected.
Upon a valid detection, the X1209 has the option to 1) provide a flag signal at the EV-
DET pin (open drain, active low), 2) record a time stamp when the event occurred, 3)
set a status bit (EVT bit). Note that on detection the EVT bit is set then the EVDET pin
is pulled low.
The EVIN pin can be optionally connected (see EVINEB bit) to an internal pull up cur-
rent source that operates to 1uA (always on mode). User selectable event sampling
modes are also available for low power applications with 1/4-Hz, 1-Hz and 2-Hz sam-
ple detection rates. The EVIN input is pulsed ON/OFF when in sampling mode for pow-
er savings advantages.
The X1 pin is the input of an inverting amplifier. An external 32.768kHz quartz crys-
2
X2
3
V
BAT
BAT
supplies power
4
5
V
EVIN
SS
6
7
EVDET
SDA
Serial Data (SDA).
device. It has an open drain output and may be wire ORed with other open drain or
open collector outputs. The input buffer is always active (not gated).
An open drain output requires the use of a pull-up resistor. The output circuitry controls
the fall time of the output signal with the use of a slope controlled pull-down. The circuit
is designed for 400kHz 2-wire interface speeds. Disabled when the backup power sup-
ply on the V
BAT
pin is activated.
SDA is a bidirectional pin used to transfer data into and out of the
10-Pin MSOP
X1209
NC = No internal connection
10-lead FCP
Bump
Chip
Scale
tbd
1
2
3
4
5
9
8
7
6
10
X1
X2
V
BAT
V
SS
EVIN
V
CC
IRQ / FOUT
SCL
SDA
EVDET
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X1226(中文) | Real Time Clock/Calendar with Output Frequency and EEPROM(實時時鐘/日歷，帶輸出頻率和EEPROM) |
| X1226 | Real Time Clock/Calendar with EEPROM |
| X1226S8 | Real Time Clock/Calendar with EEPROM |
| X1226S8I | Real Time Clock/Calendar with EEPROM |
| X1226V8 | Real Time Clock/Calendar with EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X1210MKX7R8BB564 | 制造商:Yageo / Phycomp 功能描述:0.56uF 25V SM CAP-X2Y FILTER 1210 X7R 20% Ni Barr w/100% Tin - free partial T/R at 500. |
| X121198-ISD | 制造商:Honeywell Sensing and Control 功能描述:RESISTIVE & OPTICAL |
| X-1214-1 | 制造商:Pulse Electronics Corporation 功能描述:DATA BUS - Rail/Tube |
| X-1215-1 | 制造商:Pulse Electronics Corporation 功能描述:DATA BUS - Rail/Tube |
| X121770-ISD | 制造商:Honeywell Sensing and Control 功能描述:RESISTIVE & OPTICAL |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。