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PDF STC12C2052AD Data sheet ( Hoja de datos )
| Número de pieza | STC12C2052AD | |
| Descripción | MCD | |
| Fabricantes | STC MCU | |
| Logotipo |  |
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SSTTCCS1T12C2LCE2D20M0a55Ct2a2UAASDDhLesseeimetrriieiteessdM.MCCUU
STC MCU Limited
www.STCMCU.com
STC MCU Limited.
Update date: 2011-7-15
website：www.STCMCU.com
Free Datasheet http://www.Datasheet4U.com
1 page  
Chapter 9. Analog to Digital Converter...................................203
9.1 A/D Converter Structure.................................................................... 203
9.2 Registers for ADC.............................................................................. 205
9.3 Application Circuit of A/D Converter ............................................... 208
9.4 ADC Application Circuit for Key Scan............................................. 209
9.5 A/D reference voltage source............................................................. 210
9.6 Program using interrupts to demostrate A/D Conversion ..................211
9.7 Program using polling to demostrate A/D Conversion ..................... 217
Chapter 10. Programmable Counter Array(PCA).................223
ited10.1 SFRs related with PCA.................................................................... 223
10.2 PCA/PWM Structure........................................................................ 228
Lim10.3 PCA Modules Operation Mode....................................................... 230
10.3.1 PCA Capture Mode......................................................................................... 230
CU10.3.2 16-bit Software Timer Mode........................................................................... 231
10.3.3 High Speed Output Mode................................................................................ 232
M10.3.4 Pulse Width Modulator Mode (PWM mode).................................................. 233
STC10.4 Programs for PCA module extended external interrupt .................. 234
10.5 Demo Programs for PCA module acted as 16-bit Timer ................ 238
10.6 Programs for PCA module as 16-bit High Speed Output................ 242
10.7 Demo Programs for PCA module as PWM Output ........................ 246
10.8 Demo Program for PCA clock base on Timer 1 overflow rate....... 250
10.9 Using PWM achieve D/A Conversion function reference circuit.... 254
Chapter 11. Serial Peripheral Interface (SPI).........................255
11.1 Special Function Registers related with SPI.................................... 255
11.2 SPI Structure.................................................................................... 258
11.3 SPI Data Communication................................................................. 259
11.3.1 SPI Configuration............................................................................................ 259
11.3.2 SPI Data Communication Modes.................................................................... 260
11.3.3 SPI Data Modes............................................................................................... 262
11.4 SPI Function Demo Programs (Single Master — Single Slave)...... 264
11.4.1 SPI Function Demo Programs using Interrupts (C and ASM)........................ 264
11.4.2 SPI Function Demo Programs using Polling (C and ASM)............................ 270
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5 Page 
www.STCMCU.com
Mobile:(86)13922809991
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1.5 STC12C2052AD series Minimum Application System
Fax:86-755-82905966
When the frequency of crystal oscillator is lower than 12MHz,
it is suggested not to use C1 and R1 replaced by 1K
resistor connect to ground.
But R/C reset circuit is also suggest to reserve.
10μF +
C1
10K
C2<33pF
X1
C3<33pF
1 RST
2 P3.0/RxD
3 P3.1/TxD
4 XTAL2
5 XTAL1
6 P3.2/INT0
7 P3.3/INT1
8 P3.4/T0/ECI
9 P3.5/T1/PCA1/PWM1
10 Gnd
STCAbout crystals circuit:
Vin
VCC 20
ADC7/SCLK/P1.7 19
Power On SW1
ADC6/MISO/P1.6 18 C6
+ C5
0.1μF
ADC5/MOSI/P1.5 17
ADC4/SS/P1.4 16
ited.ADC3/P1.3 15
ADC2/P1.2 14
LimCLKOUT1/ADC1/P1.1 13
CLKOUT0/ADC0/P1.0 12
MCUPWM0/PCA0/P3.7 11
10μF
System power/5V/3V
If using internal R/C oscillator clock (4MHz ~ 8MHz, manufacturing error), XTAL1 and XTAL2 pin should
be floated.
If External clock frequency is higher than 33MHz, it is recommended to directly use external active crystals
which clock are input from XTAL1 pin and XTAL2 pin must be floated.
STC MCU Limited.
website：www.STCMCU.com
11
Free Datasheet http://www.Datasheet4U.com
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet STC12C2052AD.PDF ] | |
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