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Cypress CY7C64113C Manual De Usuario

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CY7C64013C
 CY7C64113C
Document #: 38-08001 Rev. *B
Page 46 of 51
DAC Interface
R
up
DAC Pull-up Resistance (typical 14 k
Ω)
8.0
24.0
k
Ω
I
sink0(0)
DAC[7:2] Sink current (0)
V
out
 = 2.0V DC 
0.1
0.3
mA
I
sink0(F)
DAC[7:2] Sink current (F)
V
out
 = 2.0V DC 
0.5
1.5
mA
I
sink1(0)
DAC[1:0] Sink current (0)      
V
out
 = 2.0V DC
1.6
4.8
mA
I
sink1(F)
DAC[1:0] Sink current (F)
V
out
 = 2.0V DC 
8
24
mA
I
range
Programmed Isink Ratio: max/min
V
out
 = 2.0V DC
4
6
T
ratio
Tracking Ratio DAC[1:0] to DAC[7:2]
V
out
 = 2.0V
[7]
14
22
I
sinkDAC
DAC Sink Current
V
out
 = 2.0V DC 
1.6
4.8
mA
I
lin
Differential Nonlinearity
DAC Port
0.6
LSB
24.0
 Switching Characteristics 
(f
OSC
 = 6.0 MHz)
Parameter
Description
Min.
Max.
Unit
Clock Source
f
OSC
Clock Rate
6 ±0.25%
MHz
t
cyc
Clock Period
166.25
167.08
ns
t
CH
Clock HIGH time
0.45 t
CYC
ns
t
CL
Clock LOW time
0.45 t
CYC
ns
USB Full Speed Signaling
t
rfs
Transition Rise Time
4
20
ns
t
ffs
Transition Fall Time
4
20
ns
t
rfmfs
Rise / Fall Time Matching; (t
r
/t
f
)
90
111
%
t
dratefs
Full Speed Date Rate
12 ±0.25%
Mb/s
DAC Interface
t
sink
Current Sink Response Time
0.8
 µs
HAPI Read Cycle Timing
t
RD
Read Pulse Width
15
ns
t
OED
OE LOW to Data Valid
40
ns
t
OEZ
OE HIGH to Data High-Z
20
ns
t
OEDR
OE LOW to Data_Ready Deasserted
0
60
ns
HAPI Write Cycle Timing
t
WR
Write Strobe Width
15
ns
t
DSTB
Data Valid to STB HIGH (Data Set-up Time)
5
ns
t
STBZ
STB HIGH to Data High-Z (Data Hold Time)
15
ns
t
STBLE
STB LOW to Latch_Empty Deasserted
0
50
ns
Timer Signals
t
watch
Watchdog Timer Period
8.192
14.336
ms
Notes:
6.
Irange: I
sinkn
(15)/ I
sinkn
(0) for the same pin.
7.
T
ratio
 = I
sink1
[1:0](n)/I
sink0
[7:2](n) for the same n, programmed.
8.
I
lin 
measured as largest step size vs. nominal according to measured full scale and zero programmed values.
9.
Per Table 7-6 of revision 1.1 of USB specification.
10. For 25-pF load.
11. Assumes chip select CS is asserted (LOW).
23.0
 Electrical Characteristics 
 (continued)
f
OSC
 = 6 MHz; Operating Temperature = 0 to 70°C, V
CC
 = 4.0V to 5.25V
Parameter
Description
Conditions
Min.
Max.
Unit