CY8C3665AXI-010 Cypress Semiconductor Corp, CY8C3665AXI-010 Datasheet - Page 52

• Manufacturer Part Number: CY8C3665AXI-010
• Description: PSOC3
• Manufacturer: Cypress Semiconductor Corp
• Series: PSOC™ 3 CY8C36xxr

Specifications of CY8C3665AXI-010

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.71 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 67MHz
• Number Of I /o: 62
• Eeprom Size: 1K x 8
• Core Processor: 8051
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 32KB (32K x 8)
• Data Converters: A/D 2x12b, D/A 4x8b
• Oscillator Type: Internal
• Peripherals: CapSense, DMA, POR, PWM, WDT
• Connectivity: EBI/EMI, I²C, LIN, SPI, UART/USART
• Core Size: 8-Bit
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Technology: CMOS
• Processing Unit: Microcontroller
• Operating Supply Voltage (min): 1.8V
• Operating Supply Voltage (typ): 2.5/3.3/5V
• Operating Supply Voltage (max): 5.5V
• Package Type: TQFP
• Screening Level: Industrial
• Pin Count: 100
• Mounting: Surface Mount
• Rad Hardened: No
• Processor Series: CY8C36
• Core: 8051
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: I2C, SPI, UART, USB
• Maximum Clock Frequency: 67 MHz
• Number Of Programmable I/os: 28 to 72
• Number Of Timers: 4
• Operating Supply Voltage: 0.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Controller Family/series: (8051) PSOC 3
• No. Of I/o's: 62
• Eeprom Memory Size: 1KB
• Ram Memory Size: 4KB
• Cpu Speed: 67MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The same opamps and block interfaces are also connectable to
an array of resistors which allows the construction of a variety of
continuous time functions.
The opamp and resistor array is programmable to perform
various analog functions including
8.5.1 Naked Opamp
The Naked Opamp presents both inputs and the output for
connection to internal or external signals. The opamp has a unity
gain bandwidth greater than 6.0 MHz and output drive current up
to 650 µA. This is sufficient for buffering internal signals (such as
DAC outputs) and driving external loads greater than 7.5 kΩ.
8.5.2 Unity Gain
The Unity Gain buffer is a Naked Opamp with the output directly
connected to the inverting input for a gain of 1.00. It has a –3 dB
bandwidth greater than 6.0 MHz.
8.5.3 PGA
The PGA amplifies an external or internal signal. The PGA can
be configured to operate in inverting mode or noninverting mode.
The PGA function may be configured for both positive and
negative gains as high as 50 and 49 respectively. The gain is
adjusted by changing the values of R1 and R2 as illustrated in
Figure 8-9
shows the configuration and possible resistor settings for the
PGA. The gain is switched from inverting and non inverting by
changing the shared select value of the both the input muxes.
The bandwidth for each gain case is listed in
Table 8-3. Bandwidth
Figure 8-9. PGA Resistor Settings
Document Number: 001-53413 Rev. *J
V
V
S
V
V
in
ref
ref
in
Naked operational amplifier – Continuous mode
Unity-gain buffer – Continuous mode
Programmable gain amplifier (PGA) – Continuous mode
Transimpedance amplifier (TIA) – Continuous mode
Up/down mixer – Continuous mode
Sample and hold mixer (NRZ S/H) – Switched cap mode
First order analog to digital modulator – Switched cap mode
Gain
24
48
50
0
1
0
1
1
on page 52. The schematic in
20 k or 40 k
R1
Bandwidth
6.0 MHz
340 kHz
220 kHz
215 kHz
R2
20 k to 980 k
Figure 8-9
PRELIMINARY
Table
8-3.
on page 52
The PGA is used in applications where the input signal may not
be large enough to achieve the desired resolution in the ADC, or
dynamic range of another SC/CT block such as a mixer. The gain
is adjustable at runtime, including changing the gain of the PGA
prior to each ADC sample.
8.5.4 TIA
The Transimpedance Amplifier (TIA) converts an internal or
external current to an output voltage. The TIA uses an internal
feedback resistor in a continuous time configuration to convert
input current to output voltage. For an input current Iin, the output
voltage is Iin × Rfb +V
non inverting input. The feedback resistor Rfb is programmable
between 20 KΩ and 1 MΩ through a configuration register.
Table 8-4
configuration settings.
Table 8-4. Feedback Resistor Settings
Figure 8-10. Continuous Time TIA Schematic
The TIA configuration is used for applications where an external
sensor's output is current as a function of some type of stimulus
such as temperature, light, magnetic flux etc. In a common
application, the voltage DAC output can be connected to the
V
current by adjusting the voltage DAC output voltage.
8.6 LCD Direct Drive
The PSoC Liquid Crystal Display (LCD) driver system is a highly
configurable peripheral designed to allow PSoC to directly drive
a broad range of LCD glass. All voltages are generated on chip,
eliminating the need for external components. With a high
multiplex ratio of up to 1/16, the CY8C36 family LCD driver
system can drive a maximum of 736 segments. The PSoC LCD
driver module was also designed with the conservative power
budget of portable devices in mind, enabling different LCD drive
modes and power down modes to conserve power.
V ref
REF
I in
Configuration Word
PSoC
TIA input to allow calibration of the external sensor bias
shows the possible values of Rfb and associated
000b
001b
010b
011b
100b
101b
110b
111b
®
3: CY8C36 Family Datasheet
REF
, where V
R fb
Nominal R
REF
is the value placed on the
1000
120
250
500
20
30
40
60
fb
V out
(
K Ω
)
Page 52 of 111
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