AT89C51AC3-SLSUM Atmel, AT89C51AC3-SLSUM Datasheet - Page 97

• Manufacturer Part Number: AT89C51AC3-SLSUM
• Description: IC 8051 MCU FLASH 64K 44PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51AC3-SLSUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2304 B
• Interface Type: UART, SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Operating Supply Voltage: 3 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 44PLCC
• Device Core: 8051
• Family Name: 89C
• Maximum Speed: 60 MHz
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 55. PCA Capture Mode
16-bit Software Timer
Mode
Figure 56. PCA 16-bit Software Timer and High Speed Output Mode
4383D–8051–02/08
Write to
CCAPnL
Write to CCAPnH
Reset
CEXn
n = 0, 4
“0”
“1”
PCA Counter
(8 bits)
CH
(8 bits)
The PCA modules can be used as software timers by setting both the ECOM and MAT
bits in the modules CCAPMn register. The PCA timer will be compared to the module’s
capture registers and when a match occurs an interrupt will occur if the CCFn (CCON
SFR) and the ECCFn (CCAPMn SFR) bits for the module are both set.
CL
7
-
Enable
7
0CAPPn CAPNn
-
Compare/Capture Module
CCAPnH
ECOMn0 0 MATn TOGn0 ECCFn
(8 bits)
16-Bit Comparator
0
CCAPMn Register (n = 0, 4)
CCAPnL
(8 bits)
000
For software Timer mode, set ECOMn and MATn.
For high speed output mode, set ECOMn, MATn and TOGn.
CCAPMn Register
Match
ECCFn
(n = 0, 4)
CCON
CCFn
CCFn
CCON reg
CCAPnH CCAPnL
Toggle
(8bits)
PCA Counter
CH
0
(8bits)
CL
PCA
Interrupt
Request
CEXn
PCA
Interrupt
Request
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