FN6755.1 March 3, 2011 tAA SCL Falling Edge to SDA Output Data Valid SCL falling" />
參數(shù)資料
型號(hào)： ISL12057IBZ
廠商： Intersil
文件頁數(shù)： 13/17頁
文件大小： 0K
描述： IC RTC/CALENDAR I2C 8-SOIC
標(biāo)準(zhǔn)包裝： 980
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，閏年
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 線串口
電源電壓： 1.8 V ~ 3.6 V
電壓 - 電源，電池： 1.4 V ~ 1.8 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 管件
5
FN6755.1
March 3, 2011
tAA
SCL Falling Edge to SDA Output
Data Valid
SCL falling edge crossing 30% of VDD,
until SDA exits the 30% to 70% of VDD
window.
900
ns
tBUF
Time the Bus Must Be Free
Before the Start of a New
Transmission
SDA crossing 70% of VDD during a
STOP condition, to SDA crossing 70%
of VDD during the following START
condition
1300
ns
tLOW
Clock LOW Time
Measured at the 30% of VDD crossing
1300
ns
tHIGH
Clock HIGH Time
Measured at the 70% of VDD crossing
600
ns
tSU:STA
START Condition Setup Time
SCL rising edge to SDA falling edge.
Both crossing 70% of VDD
600
ns
tHD:STA
START Condition Hold Time
From SDA falling edge crossing 30% of
VDD to SCL falling edge crossing 70%
of VDD
600
ns
tSU:DAT
Input Data Setup Time
From SDA exiting the 30% to 70% of
VDD window, to SCL rising edge
crossing 30% of VDD
100
ns
tHD:DAT
Input Data Hold Time
From SCL falling edge crossing 30% of
VDD to SDA entering the 30% to 70%
of VDD window
0
900
ns
tSU:STO STOP Condition Setup Time
From SCL rising edge crossing 70% of
VDD, to SDA rising edge crossing 30%
of VDD
600
ns
tHD:STO STOP Condition Hold Time
From SDA rising edge to SCL falling
edge. Both crossing 70% of VDD
600
ns
tDH
Output Data Hold Time
From SCL falling edge crossing 30% of
VDD, until SDA enters the 30% to 70%
of VDD window
0
ns
tR
SDA and SCL Rise Time
From 30% to 70% of VDD
20 + 0.1 x Cb
300
ns
tF
SDA and SCL Fall Time
From 70% to 30% of VDD
20 + 0.1 x Cb
300
ns
Cb
Capacitive Loading of SDA or SCL Total on-chip and off-chip
10
400
pF
Rpu
SDA and SCL Bus Pull-Up
Resistor Off-Chip
Maximum is determined by tR and tF
For Cb = 400pF, max is about
2k
Ω to~2.5kΩ.
For Cb = 40pF, max is about 15k
Ω to
~20k
Ω
1
k
Ω
NOTES:
6. IRQ1/FOUT inactive.
7. Typical values are for T = +25°C and 3.3V supply voltage.
8. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
9. These are I2C specific parameters and are not production tested; however, they are used to set conditions for testing devices to validate
specification.
10. Parts will work with SDA pull-up voltage above the VPULLUP limit but the tAA and tFin the I2C parameters are not guaranteed.
11. Specified at +25°C.
Serial Interface Specifications Over the recommended operating conditions unless otherwise specified. Boldface limits apply over
the operating temperature range, -40°C to +85°C. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 8)
TYP
(Note 7)
MAX
(Note 8)
UNITS NOTES
ISL12057
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