CY8C3244LTI-123 Cypress Semiconductor Corp, CY8C3244LTI-123 Datasheet - Page 27

• Manufacturer Part Number: CY8C3244LTI-123
• Description: CY8C3244LTI-123
• Manufacturer: Cypress Semiconductor Corp
• Series: PSOC™ 3 CY8C32xxr

Specifications of CY8C3244LTI-123

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, LIN, SPI, UART/USART
• Peripherals: CapSense, DMA, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 5.5 V
• Data Converters: A/D 2x12b, D/A 1x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• 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: QFN EP
• Screening Level: Industrial
• Pin Count: 48
• Mounting: Surface Mount
• Rad Hardened: No
• Processor Series: CY8C32
• Core: 8051
• Data Bus Width: 32 bit
• Data Ram Size: 2 KB
• Interface Type: I2C, SPI, UART, USB
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 29
• Number Of Timers: 4
• Operating Supply Voltage: 1.71 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: 25
• Eeprom Memory Size: 0.5KB
• Ram Memory Size: 2KB
• Cpu Speed: 50MHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 6-1. Oscillator Summary
6.1.1 Internal Oscillators
6.1.1.1 Internal Main Oscillator
In most designs the IMO is the only clock source required, due
to its ±1-percent accuracy. The IMO operates with no external
components and outputs a stable clock. A factory trim for each
frequency range is stored in the device. With the factory trim,
tolerance varies from ±1 percent at 3 MHz, up to ±4-percent at
24 MHz. The IMO, in conjunction with the PLL, allows generation
of CPU and system clocks up to the device's maximum
frequency (see
The IMO provides clock outputs at 3, 6, 12, and 24 MHz.
Document Number: 001-56955 Rev. *J
MHzECO
kHzECO
Source
Doubler
IMO
DSI
PLL
ILO
Phase-locked
24 MHz
12 MHz
32 kHz
3 MHz
4 MHz
0 MHz
1 kHz
Fmin
7
12-48 MHz
3-24 MHz
Doubler
IMO
Divider 16 bit
Divider 16 bit
Divider 16 bit
Divider 16 bit
±1% over voltage and temperature
Crystal dependent
Input dependent
Input dependent
Input dependent
–50%, +100%
Crystal dependent
Digital Clock
Digital Clock
Digital Clock
Digital Clock
Loop)
4-25 MHz
ECO
Tolerance at Fmin
24-50 MHz
PLL
Figure 6-1. Clocking Subsystem
External IO
0-50 MHz
or DSI
Clock Mux
Divider 16 bit
Divider 16 bit
Divider 16 bit
Divider 16 bit
Digital Clock
Digital Clock
Digital Clock
Digital Clock
System
32 kHz ECO
6.1.1.2 Clock Doubler
The clock doubler outputs a clock at twice the frequency of the
input clock. The doubler works for input frequency ranges of 6 to
24 MHz (providing 12 to 48 MHz at the output). It can be
configured to use a clock from the IMO, MHzECO, or the DSI
(external pin). The doubler is typically used to clock the USB.
6.1.1.3 Phase-locked Loop
The PLL allows low-frequency, high-accuracy clocks to be
multiplied to higher frequencies. This is a tradeoff between
higher clock frequency and accuracy and, higher power
consumption and increased startup time.
100 kHz
24 MHz
25 MHz
50 MHz
50 MHz
48 MHz
32 kHz
Fmax
1,33,100 kHz
±4%
Crystal dependent
Input dependent
Input dependent
Input dependent
–55%, +100%
Crystal dependent
ILO
Tolerance at Fmax
7
PSoC
CPU Clock Divider
Bus Clock Divider
Analog Clock
Divider 16 bit
Analog Clock
Divider 16 bit
Analog Clock
Divider 16 bit
Analog Clock
Divider 16 bit
®
3: CY8C32 Family
16 bit
4 bit
10 µs max
Input dependent
250 µs max
1 µs max
5 ms typ, max is
crystal dependent
15 ms max in lowest
power mode
500 ms typ, max is
crystal dependent
w
w
w
w
s
k
e
s
k
e
s
k
e
s
k
e
Data Sheet
Startup Time
Clock
CPU
Clock
Bus
Page 27 of 119
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