CY8CTST200-32LQXIT Cypress Semiconductor Corp, CY8CTST200-32LQXIT Datasheet - Page 67
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CY8CTST200-32LQXIT
Manufacturer Part Number
CY8CTST200-32LQXIT
Description
CY8CTST200-32LQXIT
Manufacturer
Cypress Semiconductor Corp
Series
TrueTouch™r
Datasheet
1.CY8CTST200-16LGXI.pdf
(308 pages)
Specifications of CY8CTST200-32LQXIT
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
28
Voltage - Supply
1.8 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-UQFN Exposed Pad, 32-HUQFN, 32-SQFN
Processor Series
CY8CTxx2xx
Core
M8C
Data Bus Width
8 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8. Internal Low Speed Oscillator (ILO)
This chapter briefly explains the Internal Low Speed Oscillator (ILO) and its associated register. The Internal Low Speed
Oscillator produces a 32 kHz or 1 kHz clock. For a quick reference of all PSoC registers in address order, refer to the
Register
Reference chapter on page
187.
8.1
Architectural Description
The Internal Low Speed Oscillator (ILO) is an oscillator with a nominal frequency of 32 kHz or 1 kHz. It is used to generate
sleep wakeup interrupts and watchdog resets. This oscillator is also used as a clocking source for the digital blocks. This
block operates with a small internal bias current and produces an output clock of either 1 kHz or 32 kHz, configurable by the
user. The ILO is trimmed for 32 kHz in production devices. There is no trim for 1 kHz, hence, high variation is expected from
nominal value.
The block operates by charging a capacitor with a current, to a reference level. Once reached, the capacitor is discharged to
ground. This process repeats to provide the oscillator (half) period.
PSoC CY8CTMG20x and CY8CTST200 TRM, Document No. 001-53603 Rev. *C
67
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