AT89C51IC2-RLTIL Atmel, AT89C51IC2-RLTIL Datasheet - Page 20
AT89C51IC2-RLTIL
Manufacturer Part Number
AT89C51IC2-RLTIL
Description
IC 8051 MCU FLASH 32K 44VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51IC2-SLRIM.pdf
(147 pages)
Specifications of AT89C51IC2-RLTIL
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51IC2-RLTIL
Manufacturer:
ATMEL
Quantity:
640
Company:
Part Number:
AT89C51IC2-RLTIL
Manufacturer:
ATMEL
Quantity:
4 116
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Timer 0: Clock Inputs
20
AT89C51IC2
Figure 4. Timer 0: Clock Inputs
Note:
SCLKT0 = 0: Timer 0 uses the standard T0 pin as clock input (Standard mode)
SCLKT0 = 1: Timer 0 uses the special Sub Clock as clock input, this feature can be use
as periodic interrupt for time clock.
–
FCLK PERIPH
F
In X2 Mode:
In X1 Mode:
The SCLKT0 bit in OSCCON register allows to select Timer 0 Subsidiary clock.
CLK CPU
Sub Clock
T0 pin
INT0
TR0
Gate
and F
OSCCON
SCLKT0
CLK PERIPH
F
F
1
0
:6
CPU
CPU
=
=
F
F
CLKPERIPH
CLKPERIPH
, for CKRL<>0xFF
TMOD
C/T
1
0
=
=
--------------------------------------------- -
2
--------------------------------------------- -
4
×
×
Control
(
(
255 CKRL
255 CKRL
F
F
OSCA
OSCA
–
–
Timer 0
)
)
4301D–8051–02/08
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