CY8CTST200-48LTXIT Cypress Semiconductor Corp, CY8CTST200-48LTXIT Datasheet - Page 136

• Manufacturer Part Number: CY8CTST200-48LTXIT
• Description: IC MCU 32K FLASH 48-QFN
• Manufacturer: Cypress Semiconductor Corp
• Series: TrueTouch™r

Specifications of CY8CTST200-48LTXIT

• 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-QFN
• Processor Series: CY8CTxx2xx
• Core: M8C
• Data Bus Width: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16.2.2
The device’s core runs on chip regulated supply, so there is
a time delay in powering up the core. A short XRES pulse at
power up causes an external reset startup behavior. How-
ever, the event is latched and applied only after the core has
powered up (a delay of about 1 ms).
System Resets
136
Powerup External Reset Behavior
PSoC CY8CTMG20x and CY8CTST200 TRM, Document No. 001-53603 Rev. *C
16.2.3
During External Reset (XRES=1), both P1[0] and P1[1] drive
resistive low (0). After XRES deasserts, these pins continue
to drive resistive low for another eight sleep clock cycles
(approximately 200 μ s). After this time, both pins transition
to a high impedance state and normal CPU operation
begins. This is illustrated in
Figure 16-2. P1[1:0] Behavior on External Reset (XRES)
XRES
P1[0]
P1[1]
GPIO Behavior on External Reset
R0
R0
T1 = 8 Sleep Clock Cycles
T1
(approximately 200 μs)
Figure
16-2.
HiZ
HiZ
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