CY8C26643-24AXI Cypress Semiconductor Corp, CY8C26643-24AXI Datasheet - Page 74

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

Specifications of CY8C26643-24AXI

• 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: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 428-1645

10.6
All analog PSoC blocks in a particular Analog Column
share the same clock signal. Choosing the clocking for
an analog PSoC block is a two-step process.
1.
10.6.1 Analog Column Clock Select Register
Table 63:
Analog Column Clock Select Register (CLK_CR0, Address = Bank 1, 60h)
74
Bit [7:6] : Acolumn3 [1:0]
0 0 = 24V1
0 1 = 24V2
1 0 = ACLK0
1 1 = ACLK1
Bit [5:4] : Acolumn2 [1:0]
0 0 = 24V1
0 1 = 24V2
1 0 = ACLK0
1 1 = ACLK1
Bit [3:2] : Acolumn1 [1:0]
0 0 = 24V1
0 1 = 24V2
1 0 = ACLK0
1 1 = ACLK1
Bit [1:0] : Acolumn0 [1:0]
0 0 = 24V1
0 1 = 24V2
1 0 = ACLK0
1 1 = ACLK1
Bit Name
Read/
Write
Bit #
POR
First, if the user wants to use the ACLK0 and
ACLK1 system-clocking signals, the digital PSoC
blocks that serve as the source for these signals
must be selected. This selection is made in the Ana-
log Clock Select Register (CLK_CR1).
Analog PSoC Block Clocking Options
Analog Column Clock Select Register
Acolumn3
RW
[1]
7
0
Acolumn3
RW
[0]
6
0
Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
Acolumn2
RW
[1]
5
0
Acolumn2
RW
[0]
4
0
2.
Next, the user must select the source for the
Acolumn0 , Acolumn1 , Acolumn2 , and Acolumn3
system-clocking signals. The user will choose the
clock for Acolumnx[1:0] bits in the Analog Column
Clock Select Register (CLK_CR0). Each analog
PSoC block in a particular Analog Column is
clocked from the Acolumn[x] system-clocking sig-
nal for that column. (Note that the Acolumn[x] sig-
nals have a 1:4 divider on them.)
Acolumn1
RW
[1]
3
0
Acolumn1
RW
[0]
2
0
Acolumn0
RW
[1]
1
0
September 5, 2002
Acolumn0
RW
[0]
0
0