TABLE 30-17: I2
參數(shù)資料
型號: PIC18F2520T-I/ML
廠商: Microchip Technology
文件頁數(shù): 128/151頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 16KX16 28QFN
產(chǎn)品培訓模塊: Asynchronous Stimulus
PIC18 J Series MCU Overview
標準包裝: 1,600
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 40MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,HLVD,POR,PWM,WDT
輸入/輸出數(shù): 25
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 1.5K x 8
電壓 - 電源 (Vcc/Vdd): 4.2 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 10x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-VQFN 裸露焊盤
包裝: 帶卷 (TR)
配用: MCP3909RD-3PH1-ND - REF DESIGN MCP3909 3PH ENGY MTR
2011-2012 Microchip Technology Inc.
Preliminary
DS41579C-page 395
PIC16(L)F1782/3
TABLE 30-17: I2C BUS DATA REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min.
Max.
Units
Conditions
SP100* THIGH
Clock high time
100 kHz mode
4.0
s
Device must operate at a
minimum of 1.5 MHz
400 kHz mode
0.6
s
Device must operate at a
minimum of 10 MHz
SSP module
1.5TCY
SP101* TLOW
Clock low time
100 kHz mode
4.7
s
Device must operate at a
minimum of 1.5 MHz
400 kHz mode
1.3
s
Device must operate at a
minimum of 10 MHz
SSP module
1.5TCY
SP102* TR
SDA and SCL rise
time
100 kHz mode
1000
ns
400 kHz mode
20 + 0.1CB
300
ns
CB is specified to be from
10-400 pF
SP103* TF
SDA and SCL fall
time
100 kHz mode
250
ns
400 kHz mode
20 + 0.1CB
250
ns
CB is specified to be from
10-400 pF
SP106* THD:DAT
Data input hold time 100 kHz mode
0
ns
400 kHz mode
0
0.9
s
SP107* TSU:DAT
Data input setup
time
100 kHz mode
250
ns
(Note 2)
400 kHz mode
100
ns
SP109* TAA
Output valid from
clock
100 kHz mode
3500
ns
(Note 1)
400 kHz mode
ns
SP110* TBUF
Bus free time
100 kHz mode
4.7
s
Time the bus must be free
before a new transmission
can start
400 kHz mode
1.3
s
SP111
CB
Bus capacitive loading
400
pF
* These parameters are characterized but not tested.
Note 1:
As a transmitter, the device must provide this internal minimum delay time to bridge the undefined region
(min. 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
2:
A Fast mode (400 kHz) I2C bus device can be used in a Standard mode (100 kHz) I2C bus system, but
the requirement TSU:DAT
250 ns must then be met. This will automatically be the case if the device does
not stretch the low period of the SCL signal. If such a device does stretch the low period of the SCL signal,
it must output the next data bit to the SDA line TR max. + TSU:DAT = 1000 + 250 = 1250 ns (according to
the Standard mode I2C bus specification), before the SCL line is released.
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