CY8CTST200A-48PVXIT Cypress Semiconductor Corp, CY8CTST200A-48PVXIT Datasheet - Page 93
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CY8CTST200A-48PVXIT
Manufacturer Part Number
CY8CTST200A-48PVXIT
Description
CY8CTST200A-48PVXIT
Manufacturer
Cypress Semiconductor Corp
Series
TrueTouch™r
Datasheet
1.CY8CTST200-16LGXI.pdf
(308 pages)
Specifications of CY8CTST200A-48PVXIT
Applications
Touchscreen Controller
Core Processor
M8C
Program Memory Type
FLASH (32 kB)
Controller Series
CY8CT
Ram Size
2K x 8
Interface
I²C, SPI, UART/USART, USB
Number Of I /o
38
Voltage - Supply
1.8 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-SSOP
Processor Series
CY8CTxx2xxA
Core
M8C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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11.2.2
The TrueTouch Control Register 1 (CS_CR1) contains addi-
tional TrueTouch system control options. Never write to this
register while the block is enabled.
Bit 7: CHAIN. When this bit is a ‘0’, the two 8-bit counters
operate independently. When this bit is a ‘1’, the counters
are chained to operate as a 16-bit counter.
Bits 6 and 5: CLKSEL[1:0]. These bits select the True-
Touch module frequency of operation according to the fol-
lowing table:
Bit 4: RLOCLK. When this bit is a ‘0’, the entire TrueTouch
system runs at the frequency specified in the CLKSEL[1:0]
bits. When this bit is a ‘1’, the High Counter is clocked inde-
pendently by the TrueTouch RLO clock.
11.2.3
The TrueTouch Control Register 2 (CS_CR2) contains addi-
tional TrueTouch system control options.
Bits 7 and 6: IRANGE. These bits scale the IDAC current
output.
Bit 5: IDACDIR. This bit determines whether the IDAC
sinks or sources current to the analog global bus when
enabled.
Bit 4: IDAC_EN. This bit enables manual connection of the
IDAC to the analog global bus.
Bit 3: CIN_EN. This bit enables the negative charge inte-
gration capacitor sense approach. This causes the selected
sense pin to alternately connect to the analog global bus
and ground, at the rate selected by the CLKSEL bits in the
CS_CR1 register.
PSoC CY8CTMG20x and CY8CTST200 TRM, Document No. 001-53603 Rev. *C
0,A1h
0,A2h
CLKSEL[1:0]
Address
Address
00
01
10
11
CS_CR1
CS_CR2
CS_CR1 Register
CS_CR2 Register
IMO
IMO/2
IMO/4
IMO/8
Name
Name
CHAIN
Bit 7
Bit 7
Frequency of Operation
IRANGE
Bit 6
Bit 6
CLKSEL[1:0]
IDACDIR
Bit 5
Bit 5
IDAC_EN
RLOCLK
Bit 4
Bit 4
Bit 3: INV. Input Invert. When this bit is a ‘0’, the input
polarity is unchanged. When this bit is a ‘1’, the data input
select is inverted.
Bits 2 to 0: INSEL[2:0]. Input Selection. These bits control
the selection of input signals for event control according to
the following table:
For additional information, refer to the
page
Bit 2: PXD_EN. This bit drives a clock to each I/O pin that
is enabled for connection to the analog global bus. This
clock alternately connects the pin to the bus, then connects
the pin to ground. The clock rate is selected by the CLKSEL
bits in the CS_CR1 register. In addition, the IDAC sources
current to the bus. The programmable timer is clocked by
this same clock.
Bit 1: CIP_EN. This bit enables the positive charge integra-
tion capacitor sense approach. This causes the reference
buffer and the selected integration capacitor pin(s) to alter-
nately connect to the analog global bus at the rate selected
by the CLKSEL bits in the CS_CR1 register.
Bit 0: RO_EN. This bit enables the relaxation oscillator.
The internal RO is connected to the analog global bus, and
the capacitance of any connected pins affects the RO fre-
quency. The oscillator current is set by the value of the
IDAC_D register.
For additional information, refer to the
page
INSEL[1:0]
000
001
010
100
101
011
110
111
212.
CIN_EN
213.
Bit 3
Bit 3
INV
Comparator 0
ILO
Comparator 1
RLO Timer Terminal Count
Internal Timer
RLO Timer IRQ
Analog Global Mux Bus
‘0’
PXD_EN
Bit 2
Bit 2
INSEL[2:0]
CIP_EN
Bit 1
Bit 1
Selected Input
CS_CR1 register on
CS_CR2 register on
RO_EN
Bit 0
Bit 0
TrueTouch Module
RW : 00
RW : 00
Access
Access
[+] Feedback
93
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