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TSC2005I Datasheet(PDF) 6 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
No. de pieza TSC2005I
Descripción Electrónicos  1.6V to 3.6V, 12-Bit, Nanopower, 4-Wire TOUCH SCREEN CONTROLLER with SPI??Interface
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Fabricante Electrónico  BURR-BROWN [Burr-Brown (TI)]
Página de inicio  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

TSC2005I Datasheet(HTML) 6 Page - Burr-Brown (TI)

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TIMING INFORMATION
BIT0
t
DIS(CSR-SDOZ)
t
H(SDI-SCLKR)
NOTE: CPOL=0,CPHA=0,Byte0cyclerequires24SCLKs,andByte1cyclerequires8SCLKs.
t
H(SCLKF-SDOVALID)
t
SU(SDI-SCLKR)
t
D(CSF-SDOVALID)
t
SU(SCLKF-CSR)
t
WH(CS)
t
C(SCLK)
t
SU(CSF-SCLK1R)
t
F
t
R
t
WL(SCLK)
t
WH(SCLK)
BIT1
MSBIN
MSBOUT
CS SS
(
)
SCLK
SDO(MISO)
SDI(MOSI)
BIT0
BIT1
TIMING REQUIREMENTS
(1)
TSC2005
SBAS379A – DECEMBER 2006 – REVISED MAY 2007
The TSC2005 supports SPI programming in mode CPOL = 0 and CPHA = 0. The falling edge of SCLK is used
to change output (MISO) data and the rising edge is used to latch input (MOSI) data. Eight SCLKs are required
to complete the Byte 1 command cycle, and 24 SCLKs are required for the Byte 0 command cycle. CS can stay
low during the entire 24 SCLKs of a Byte 0 command cycle, or multiple mixed cycles of reading and writing of
bytes and register accesses, as long as the corresponding addresses are supplied.
Figure 1. Detailed I/O Timing
All specifications typical at –40
°C to +85°C, SNSVDD = I/OVDD = 1.6V, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
tWL(RESET)
Reset low time
I/OVDD = SNSVDD
≥ 1.6V(2)
10
µs
I/OVDD
≥ 1.6V and < 2.7V, 40% to 60% duty cycle
100
ns
tC(SCLK)
SPI serial clock cycle time
I/OVDD
≥ 2.7V and ≤ 3.6V, 40% to 60% duty cycle
40
ns
I/OVDD
≥ 1.6V and < 2.7V, 10pF load
10
MHz
fSCLK
SPI serial clock frequency
I/OVDD
≥ 2.7V and ≤ 3.6V, 10pF load
25
MHz
tWH(SCLK)
SPI serial clock high time
0.4 × tC(SCLK)
0.6 × tC(SCLK)
ns
tWL(SCLK)
SPI serial clock low time
0.4 × tC(SCLK)
0.6 × tC(SCLK)
ns
tSU(CSF-SCLK1R)
Enable lead time
30
ns
tD(CSF-SDOVALID)
Slave access time
15
ns
tH(SCLKF-SDOVALID)
MISO data hold time
6
13
ns
tWH(CS)
Sequential transfer delay
15
ns
tSU(SDI-SCLKR)
MOSI data setup time
4
ns
tH(SDI-SCLKR)
MOSI data hold time
4
ns
tDIS(CSR-SDOZ)
Slave MISO disable time
15
ns
tSU(SCLKF-CSR)
Enable lag time
30
ns
tR
Rise time
SNSVDD = I/OVDD = 3V, fSCLK = 25MHz
3
ns
tF
Fall time
SNSVDD = I/OVDD = 3V, fSCLK = 25MHz
3
ns
(1)
All input signals are specified with tR = tF = 5ns (10% to 90% of I/OVDD) and timed from a voltage level of (VIL + VIH)/2.
(2)
Refer to Figure 30.
6
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