參數(shù)資料
型號: EP7212-CV-A
廠商: CIRRUS LOGIC INC
元件分類: 微控制器/微處理器
英文描述: HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
中文描述: 32-BIT, MROM, 74 MHz, RISC MICROCONTROLLER, PQFP208
封裝: LQFP-208
文件頁數(shù): 110/136頁
文件大小: 2289K
代理商: EP7212-CV-A
EP7212
110
DS474PP1
6.5
All I/O buffers on the EP7212 are CMOS threshold
input bidirectional buffers except the oscillator and
power pads. For signals that are nominally inputs,
the output buffer is only enabled during pin test
mode. All output buffers are three stated during
system (hi-Z) test mode. All buffers have a stan-
dard CMOS threshold input stage (apart from the
Schmitt-triggered inputs) and CMOS slew-rate-
I/O Buffer Characteristics
controlled output stages to reduce system noise.
Table 60
defines the I/O buffer output characteris-
tics which will apply across the full range of tem-
perature and voltage (i.e., these values are for 3.3
V, +70
°
C).
All propagation delays are specified at 50% V
DD
to
50% V
DD
, all rise times are specified as 10% V
DD
to 90% V
DD
and all fall times are specified as 90%
V
DD
to 10% V
DD
.
Figure 25. SSI Interface for AD7811/2
1
6
2
3
4
5
7
8
9
10
14
13
12
11
15
22
23
DI5
DI4
DI3
DI2
DI1
DI0
DO1
DO0
DO9
DO8
DI9
DI8
DI7
DI6
ADCCLK
(SCLK)
nADCCS
(nRFS/TFS)
ADCIN
(Din)
ADCOUT
(Dout)
SSICLK
SSI RX/TXFR
SSITXDA
SSIRXDA
t31
t33
t32
t35
t37
t38
t39
t40
t36
D7
D2
D1
D0
D7
D2
D1
D0
Figure 26. SSI2 Interface Timings
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