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參數(shù)資料
| 型號(hào)： | SM8578 |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | Real-time Clock IC |
| 中文描述： | 實(shí)時(shí)時(shí)鐘IC |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 117K |
| 代理商： | SM8578 |
SM8578BV
NIPPON PRECISION CIRCUITS INC.—1
Real-time Clock IC
OVERVIEW
The SM8578BV is a serial interface, real-time clock IC that uses a 32.768 kHz crystal oscillator for its refer-
ence timing. It comprises second-counter to year-counter clock and calendar circuits that feature automatic
leap-year adjustment, alarm and timer interrupt functions, as well as oscillator stop, timer reloading, and other
detection functions. Data is transferred to and from an external controller using a 3-wire serial interface. It is
available in compact 8-pin VSOP packages, making it ideal for use in all types of portable, hand-held equip-
ment.
FEATURES
I
1.6 to 5.5V wide operating voltage range
0.5μA (typ.) current consumption
(V
DD
= 3.0V, CE = Low)
3-wire serial interface control
Day, day-of-week, hour, and minute alarm inter-
rupt function
1/4096 seconds to 255 minutes presettable interval
timer interrupt function
Time update detection function
Abnormal oscillation detection function
Automatic leap-year adjustment function
(Western and Japanese calendars)
Oscillator capacitor C
D
built-in
Molybdenum-gate CMOS process
Miniature 8-pin VSOP package
I
I
I
I
I
I
I
I
I
I
ORDERING INFORMATION,
PINOUT
(Top view)
PACKAGE DIMENSIONS
(Unit: mm)
Device
Package
SM8578BV
8-pin VSOP
INTN
1
XTN
XT
VSS
4
VDD
DATA
CLK
CE
8
5
6
3.12 ± 0.3
0.585typ
0.65
4
0 to 10°
0.15
+ 0.05
0
1
0
0.22 ± 0.1
1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM8578BV | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC |
| SM8580 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM8580AM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM8580AM_06 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM86/16MMPX21/11MMPX21/100MM | 制造商:HUBER+SUHNER 功能描述:ASSEMBLY MMPX STR-RA 100MM |
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