CY8CTST200-16LGXI Cypress Semiconductor Corp, CY8CTST200-16LGXI Datasheet - Page 138
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CY8CTST200-16LGXI
Manufacturer Part Number
CY8CTST200-16LGXI
Description
IC MCU 32K FLASH 16-QFN
Manufacturer
Cypress Semiconductor Corp
Series
TrueTouch™r
Datasheet
1.CY8CTST200-16LGXI.pdf
(308 pages)
Specifications of CY8CTST200-16LGXI
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
13
Voltage - Supply
1.8 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-QFN
For Use With
770-1000 - ISP 4PORT FOR CYPRESS PSOC MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
428-2973
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
CY8CTST200-16LGXI
Manufacturer:
CY
Quantity:
1 300
Part Number:
CY8CTST200-16LGXI
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
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16.3.2
The System Status and Control Register 0 (CPU_SCR0) is
used to convey the status and control of events for various
functions of a PSoC device.
Bit 7: GIES. Global Interrupt Enable Status. This bit is a
read only status bit and its use is discouraged. The GIES bit
is a legacy bit that was used to provide the ability to read the
GIE bit of the CPU_F register. However, the CPU_F register
is now readable. When this bit is set, it indicates that the GIE
bit in the CPU_F register is also set, which in turn, indicates
that the microprocessor services interrupts.
Bit 5: WDRS. WatchDog Reset Status. This bit may not be
set. It is normally ‘0’ and automatically set whenever a
watchdog reset occurs. The bit is readable and clearable by
writing a ‘0’ to its bit position in the CPU_SCR0 register.
Bit 4: PORS. Power On Reset Status. This bit, which is the
watchdog enable bit, is set automatically by a POR or Exter-
nal Reset (XRES). If the bit is cleared by user code, the
watchdog timer is enabled. After cleared, the only way to
reset the PORS bit is to go through a POR or XRES. Thus,
there is no way to disable the watchdog timer other than to
go through a POR or XRES.
System Resets
138
x,FFh
LEGEND
#
XX The reset value is 10h after POR/XRES and 20h after a watchdog reset.
Address
Access is bit specific. Refer to register detail for additional information.
CPU_SCR0
CPU_SCR0 Register
Name
GIES
Bit 7
Bit 6
PSoC CY8CTMG20x and CY8CTST200 TRM, Document No. 001-53603 Rev. *C
WDRS
Bit 5
PORS
Bit 4
Bit 3: Sleep. This bit is used to enter Low Power Sleep
mode when set. To wake up the system, this register bit is
cleared asynchronously by any enabled interrupt. There are
two special features of this bit that ensure proper sleep oper-
ation. First, the write to set the register bit is blocked if an
interrupt is about to be taken on that instruction boundary
(immediately after the write). Second, there is a hardware
interlock to ensure that, once set, the SLEEP bit may not be
cleared by an incoming interrupt until the sleep circuit has
finished performing the sleep sequence and the system-
wide power down signal has been asserted. This prevents
the sleep circuit from being interrupted in the middle of the
process of system power down, possibly leaving the system
in an indeterminate state.
Bit 0: STOP. This bit is readable and writeable. When set,
the PSoC M8C stops executing code until a reset event
occurs. This can be either a POR, WDR, or XRES. If an
application wants to stop code execution until a reset, the
preferred method is to use the HALT instruction rather than a
register write to this bit.
For additional information, refer to the
on page
Sleep
Bit 3
258.
Bit 2
Bit 1
CPU_SCR0 register
STOP
Bit 0
Access
# : XX
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