參數(shù)資料
型號(hào): X1228S14I-2.7
廠商: INTERSIL CORP
元件分類(lèi): XO, clock
英文描述: TVS Diode; Diode Type:Unidirectional TVS; Stand-Off Voltage, VRWM:12V; Breakdown Voltage, Vbr:13.3V; Capacitance, Cd:150pF; Package/Case:SOT-323; Breakdown Voltage Min:13.3V; Junction Capacitance:150pF; Leaded Process Compatible:No RoHS Compliant: No
中文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO14
封裝: PLASTIC, SOIC-14
文件頁(yè)數(shù): 14/31頁(yè)
文件大?。?/td> 569K
代理商: X1228S14I-2.7
X1228
REV 1.3 3/24/04
Characteristics subject to change without notice.
14 of 31
www.xicor.com
Table 4. Watchdog Timer Time-Out Options
INTERRUPT CONTROL AND FREQUENCY
OUTPUT REGISTER (INT)
Interrupt Control and Status Bits (IM, AL1E, AL0E)
There are two Interrupt Control bits, Alarm 1 Interrupt
Enable (AL1E) and Alarm 0 Interrupt Enable (AL0E) to
specifically enable or disable the alarm interrupt signal
output (IRQ). The interrupts are enabled when either the
AL1E and AL0E bits are set to ‘1’, respectively.
Two volatile bits (AL1 and AL0), associated with the two
alarms respectively, indicate if an alarm has happened.
These bits are set on an alarm condition regardless of
whether the IRQ interrupt is enabled. The AL1 and AL0
bits in the status register are reset by the falling edge of
the eighth clock of a read of the register containing the
bits.
Pulse Interrupt Mode
The pulsed interrrupt mode allows for repetitive or
recurring alarm functionality. Hence an repetitive or
recurring alarm can be set for every n
th
second, or n
th
minute, or n
th
hour, or n
th
date, or for the same day of
the week. The pulsed interrupt mode can be consid-
ered a repetitive interrupt mode, with the repetition rate
set by the time setting of the alarm.
The Pulse Interrupt Mode is enabled when the IM bit is
set.
The Alarm IRQ output will output a single pulse of
short duration (approximately 10-40ms) once the
alarm condition is met. If the interrupt mode bit (IM bit)
is set, then this pulse will be periodic.
Programmable Frequency Output Bits—FO1, FO0
These are two output control bits. They select one of
three divisions of the internal oscillator, that is applied
to the PHZ output pin. Table 5 shows the selection bits
for this output. When using the PHZ output function,
the Alarm IRQ output function is disabled.
Table 5. Programmable Frequency Output Bits
ON-CHIP OSCILLATOR COMPENSATION
Digital Trimming Register (DTR) — DTR2, DTR1 and
DTR0 (Non-Volatile)
The digital trimming Bits DTR2, DTR1 and DTR0
adjust the number of counts per second and average
the ppm error to achieve better accuracy.
DTR2 is a sign bit. DTR2=0 means frequency
compensation is > 0. DTR2=1 means frequency
compensation is < 0.
DTR1 and DTR0 are scale bits. DTR1 gives 10 ppm
adjustment and DTR0 gives 20 ppm adjustment.
A range from -30ppm to +30ppm can be represented
by using three bits above.
Table 6. Digital Trimming Registers
WD1 WD0
0
0
1
1
Watchdog Time-Out Period
0
1
0
1
1.75 seconds
750 milliseconds
250 milliseconds
Disabled (default)
IM Bit
0
Interrupt / Alarm Frequency
Single Time Event Set By Alarm
Repetitive / Recurring Time Event Set By
Alarm
1
FO1
0
0
1
1
FO0
0
1
0
1
Output Frequency
(average of 100 samples)
Alarm IRQ output
32.768kHz
4096Hz
1Hz
DTR Register
DTR2
DTR1
0
0
0
0
1
1
1
1
Estimated frequency
PPM
0 (Default)
+10
+20
+30
0
-10
-20
-30
DTR0
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
相關(guān)PDF資料
PDF描述
X1228S14I-2.7A SM12 12V TRANSIENT VOLT SUPPRESSOR SOT23
X1228S14I-4.5A 15V 300W SOT23 TRANSORB-DUAL-SINGL''ENDED
X1228S14IZ TVS Diode; TVS Polarization:Unidirectional; Stand-Off Voltage, VRWM:15V; Breakdown Voltage, Vbr:16.7V; Peak Pulse Power PPK @ 8x20uS:300W; Capacitance, Cd:100pF; Package/Case:SOT-323; Breakdown Voltage Min:16.7V
X1228S14IZ-2.7A RTC Module With CPU Supervisor
X1228S14Z DIODE ZENER DUAL 15V
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
X1228S14I-4.5A 功能描述:IC RTC/CAL/CPU SUP EE 14-SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器,閏年,SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS(12/24 小時(shí)) 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源,電池:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件
X1228S14IZ 功能描述:IC RTC/CAL/SUP/ALRM 4K EE 14SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器,閏年,監(jiān)控器,監(jiān)視計(jì)時(shí)器 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS(12/24 小時(shí)) 數(shù)據(jù)格式:YY-MM-DD-dd 接口:I²C,2 線(xiàn)串口 電源電壓:2.7 V ~ 5.5 V 電壓 - 電源,電池:1.8 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR)
X1228S14IZ-2.7 功能描述:IC RTC/CAL/SUP/ALARM 4K-EE14SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器,閏年,SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS(12/24 小時(shí)) 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源,電池:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件
X1228S14IZ-2.7A 功能描述:IC RTC/CAL/CPU SUP EE 14-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器,閏年,SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS(12/24 小時(shí)) 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源,電池:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件
X1228S14IZ-4.5A 功能描述:IC RTC/CAL/CPU SUP EE 14-SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器,閏年,SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS(12/24 小時(shí)) 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源,電池:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件