CY8C26643-24AI Cypress Semiconductor Corp, CY8C26643-24AI Datasheet - Page 71

• Manufacturer Part Number: CY8C26643-24AI
• Description: IC MCU 16K FLASH 256B 44LQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: PSOC™ CY8C26xxxr

Specifications of CY8C26643-24AI

• Core Processor: M8C
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SPI, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 40
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.25 V
• Data Converters: A/D 1x8b, 1x11b, 1x12b; D/A 1x9b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 428-1431; 428-1431-5; 428-1431

10.0
10.1
PSoC blocks are user configurable system resources.
On-chip analog PSoC blocks reduce the need for many
MCU part types and external peripheral components.
Analog PSoC blocks can be configured to provide a wide
variety of peripheral functions. PSoC Designer Software
Integrated Development Environment provides auto-
mated configuration of PSoC blocks by simply selecting
the desired functions. PSoC Designer then generates
the proper configuration information and can print a
device data sheet unique to that configuration.
Each of the analog blocks has many potential inputs and
several outputs. The inputs to these blocks include ana-
log signals from external sources, intrinsic analog sig-
nals driven from neighboring analog blocks or various
voltage reference sources.
There are three discrete outputs from each analog block
(there are an additional two discrete outputs in the Con-
tinuous Time blocks), 1) the analog output bus (ABUS),
which is an analog bus resource that is shared by all of
the analog blocks in a column, 2) the comparator bus
(CBUS), which is a digital bus resource that is shared by
all of the analog blocks in a column, and 3) the output
bus (OUT, (plus GOUT and LOUT in the Continuous
Time blocks)), which is an analog bus resource that is
shared by all of the analog blocks in a column and con-
nects to one of the analog output buffers, to send a sig-
nal externally to the device. There are also intrinsic
outputs that connect to neighboring analog blocks.
Twelve analog PSoC blocks are available separately or
combined with the digital PSoC blocks. A precision inter-
nal voltage reference provides accurate analog compari-
sons. A temperature sensor input is provided to the
analog PSoC block array supporting applications like
battery chargers and data acquisition without requiring
external components.
There are three analog PSoC block types: Continuous
Time (CT) blocks, and Type A and Type B Switch Capac-
itor (SC) blocks. CT blocks provide continuous time ana-
log functions. SC blocks provide ADC and DAC analog
functions. Currently, supported analog functions are 12-
September 5, 2002
Analog PSoC Blocks
Introduction
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
bit Incremental and 11-bit Delta-Sigma ADC, successive
approximation ADCs up to 6 bits, DACs up to 8 bits, pro-
grammable gain stages, sample and hold circuits, pro-
grammable filters, comparators, and a temperature
sensor.
The analog functionality provided is as follows:
S
S
S
S
S
S
S
A/D and D/A converters, programmable gain blocks,
comparators, and switched capacitor filters.
Single ended configuration is cost effective for rea-
sonable speed / accuracy, and provides simple
interface to most real-world analog inputs and out-
puts.
Support is provided for sensor interfaces, audio
codes, embedded modems, and general-purpose
op amp circuits.
Flexible, System on-a-Chip programmability, provid-
ing variations in functions.
For a given function, easily selected trade-offs of
accuracy and resolution with speed, resources
(number of analog blocks), and power dissipated for
that application.
The analog section is an “Analog Computation Unit,”
providing programmed steering of signal flow and
selecting functionality through register-based control
of analog switches. It also sets coefficients in
Switched Capacitor Filters and noise shaping
(Delta-Sigma) modulators, as well as programs gain
or attenuation settings in amplifier configurations.
The architecture provides continuous time blocks
and discrete time (Switched Capacitor) blocks. The
continuous time blocks allow selection of precision
amplifier or comparator circuitry using programma-
ble resistors as passive configuration and parameter
setting elements. The Switched Capacitor (SC)
blocks allow configuration of DACs, Delta Sigma,
incremental or Successive Approximation ADCs, or
Switched Capacitor filters with programmable coeffi-
cients.
Analog PSoC Blocks
71