CY8C25122-24PI Cypress Semiconductor Corp, CY8C25122-24PI Datasheet - Page 35

• Manufacturer Part Number: CY8C25122-24PI
• Description: IC MCU 4K FLASH 256B 8-DIP
• Manufacturer: Cypress Semiconductor Corp
• Series: PSOC™ CY8C25xxxr

Specifications of CY8C25122-24PI

• Core Processor: M8C
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SPI, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 6
• Program Memory Size: 4KB (4K 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: 8-DIP (0.300", 7.62mm)
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Applications: CapSense
• Technology: CMOS
• Processing Unit: Microcontroller
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.25V
• Package Type: PDIP
• Screening Level: Industrial
• Pin Count: 8
• Mounting: Through Hole
• Rad Hardened: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant
• Other names: 428-1424

7.0
7.1
7.1.1
The internal main oscillator outputs two frequencies, 48
MHz and 24 MHz. In the absence of a high-precision
input source from the external oscillator, the accuracy of
this circuit is +/- 2.5% (between 0
external components are required to achieve this level of
accuracy. The Internal Main Oscillator Trim Register
(IMO_TR) is used to calibrate this oscillator into specified
tolerance. Factory-programmed trim values are available
for 5.0V and 3.3V operation. The 5.0V value is loaded in
the IMO_TR register upon reset. This register must be
adjusted when the operating voltage is outside the range
Table 35:
1.
Internal Main Oscillator Trim Register (IMO_TR, Address = Bank 1, E8h)
7.1.2
An internal low speed oscillator of nominally 32 kHz is
available to generate sleep wake-up interrupts and
Watchdog resets if the user does not want to attach a
32.768 kHz watch crystal. This oscillator can also be
used as a clocking source for the digital PSoC blocks.
The oscillator operates in two different modes. A trim
value is written to the Internal Low Speed Oscillator Trim
Register (ILO_TR), shown below, upon reset. See sec-
tion
into sleep mode this oscillator drops into an ultra low cur-
rent state and the accuracy is reduced.
This register sets the adjustment for the Internal Low
Speed Oscillator. The value placed in this register is
based on factory testing. It is recommended that the user
not alter this value.
September 5, 2002
Bit [7:0] : IMO Trim [7:0] Data value stored will alter the trimmed frequency of the Internal Main Oscillator. A larger
value in this register will increase the speed of the Internal Main Oscillator
Read/Write
Bit Name
FS = Factory set trim value
13.0
Bit #
POR
Clocking
Oscillator Options
Internal Low Speed Oscillator
for accuracy information. When the IC is put
Internal Main Oscillator
Internal Main Oscillator Trim Register
IMO Trim
FS
[7]
W
7
1
IMO Trim
FS
[6]
W
6
1
o
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
C and +85
IMO Trim
FS
[5]
W
5
1
o
C). No
IMO Trim
FS
[4]
W
4
for which factory calibration was set. The factory-pro-
grammed trim value is selected using the Table Read
Supervisor Call, and is documented in 11.8.
There is an option to phase lock this oscillator to the
External Crystal Oscillator. The choice of crystal and its
inherent accuracy will determine the overall accuracy of
the oscillator. The External Crystal Oscillator must be
stable prior to locking the frequency of the Internal Main
Oscillator to this reference source.
1
IMO Trim
FS
[3]
W
3
1
IMO Trim
FS
[2]
W
2
1
IMO Trim
FS
[1]
W
1
1
IMO Trim
Clocking
FS
[0]
W
0
1
35