参数资料
型号: TSC80C31-20CHR
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44
封装: LCC-44
文件页数: 132/143页
文件大小: 4602K
代理商: TSC80C31-20CHR
89
XMEGA A3BU [DATASHEET]
8362F–AVR–02/2013
37.17 Two-Wire Interface Characteristics
Table 37-33 describes the requirements for devices connected to the Two-Wire Interface Bus. The Atmel AVR XMEGA
Two-Wire Interface meets or exceeds these requirements under the noted conditions. Timing symbols refer to Figure 37-
Figure 37-7. Two-Wire Interface bus timing.
Table 37-33. Two-wire interface characteristics.
tHD;STA
tof
SDA
SCL
tLOW
tHIGH
tSU;STA
tBUF
tr
tHD;DAT
tSU;DAT
tSU;STO
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
VIH
Input high voltage
0.7VCC
VCC+0.5
V
VIL
Input low voltage
0.5
0.3×VCC
Vhys
Hysteresis of Schmitt Trigger inputs
0.05VCC (1)
VOL
Output low voltage
3mA, sink current
0
0.4
tr
Rise time for both SDA and SCL
20+0.1Cb (1)(2)
300
ns
tof
Output fall time from VIHmin to VILmax
10pF < Cb < 400pF (2)
20+0.1Cb (1)(2)
250
tSP
Spikes suppressed by input filter
0
50
II
Input current for each I/O pin
0.1VCC < VI < 0.9VCC
-10
10
A
CI
Capacitance for each I/O pin
10
pF
fSCL
SCL clock frequency
fPER (3)>max(10fSCL, 250kHz)
0
400
kHz
RP
Value of pull-up resistor
fSCL 100kHz
fSCL > 100kHz
V
CC
0.4V
3mA
----------------------------
100ns
C
b
---------------
300ns
C
b
---------------
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