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參數(shù)資料
| 型號(hào)： | M48T201V-85MH6TR |
| 廠商： | STMICROELECTRONICS |
| 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, PDSO44 |
| 封裝： | SNAPHAT, PLASTIC, SOH-44 |
| 文件頁數(shù)： | 27/32頁 |
| 文件大?。?/td> | 448K |
| 代理商： | M48T201V-85MH6TR |
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M48T201Y, M48T201V
4/32
DESCRIPTION
The M48T201Y/V are self-contained devices that
include a real time clock (RTC), programmable
alarms, a watchdog timer, and a square wave out-
put which provides control of up to 512K x 8 of ex-
ternal low-power static RAM. Access to all RTC
functions and the external RAM is the same as
conventional bytewide SRAM. The 16 TIME-
KEEPER registers offer year, month, date, day,
hour, minute, second, calibration, alarm, century,
watchdog, and square wave output data. External-
ly attached static RAMs are controlled by the
M48T201Y/V via the GCON and ECON signals.
The 44-pin, 330mil SOIC provides sockets with
gold plated contacts at both ends for direct con-
nection to a separate SNAPHAT housing con-
taining the battery and crystal. The unique design
allows the SNAPHAT battery package to be
mounted on top of the SOIC package after the
completion of the surface mount process.
Insertion of the SNAPHAT housing after reflow
prevents potential battery damage due to the high
temperatures required for device surface-mount-
ing. The SNAPHAT housing is keyed to prevent
reverse insertion. The SOIC and battery packages
are shipped separately in plastic anti-static tubes
or in Tape & Reel form. For the 44-lead SOIC, the
battery/crystal package (e.g., SNAPHAT) part
number is “M4Txx-BR12SH” (see Table 19, page
Caution: Do not place the SNAPHAT battery/crys-
tal top in conductive foam as this will drain the lith-
ium button-cell battery.
Figure 2. Logic Diagram
Table 1. Signal Names
AI02240
19
A0-A18
WDI
DQ0-DQ7
VCC
M48T201Y
M48T201V
G
VSS
8
E
ECON
GCON
W
RSTIN2
RSTIN1
RST
IRQ/FT
VOUT
SQW
A0-A18
Address Inputs
DQ0-DQ7
Data Inputs / Outputs
RSTIN1
Reset 1 Input
RSTIN2
Reset 2 Input
RST
Reset Output (Open Drain)
WDI
Watchdog Input
E
Chip Enable Input
G
Output Enable Input
W
WRITE Enable Input
ECON
RAM Chip Enable Output
GCON
RAM Enable Output
IRQ/FT
Interrupt / Frequency Test Output
(Open Drain)
SQW
Square Wave Output
VOUT
Supply Voltage Output
VCC
Supply Voltage
VSS
Ground
NC
Not Connected Internally
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48T201Y-70MH6 | 1 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T201Y-70MHTR | 1 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T212V-70MH1 | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T212V-70MH6TR | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T212V-70MH6 | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T201VMH | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER |
| M48T201VSH | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER |
| M48T201Y | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER |
| M48T201Y_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V TIMEKEEPER㈢ supervisor |
| M48T201Y_09 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V TIMEKEEPER? supervisor |
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