AT89C51RC-24AU Atmel, AT89C51RC-24AU Datasheet - Page 15
![MCU 8051 32K FLASH 5.5V 44-VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
AT89C51RC-24AU
Manufacturer Part Number
AT89C51RC-24AU
Description
MCU 8051 32K FLASH 5.5V 44-VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RC-24PU.pdf
(36 pages)
Specifications of AT89C51RC-24AU
Core Processor
8051
Core Size
8-Bit
Speed
24MHz
Connectivity
SPI, UART/USART
Peripherals
WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
For Use With
AT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RC-24AU
Manufacturer:
ATMEL
Quantity:
5 000
Figure 13-2. Timer 2 Auto Reload Mode (DCEN = 0)
Table 13-2.
Figure 13-3. Timer 2 Auto Reload Mode (DCEN = 1)
1920D–MICRO–6/08
Symbol
–
T2OE
DCEN
T2MOD Address = 0C9H
Not Bit Addressable
Bit
T2EX PIN
Not implemented, reserved for future
When set, this bit allows Timer 2 to be configured as an up/down counter
Function
Timer 2 Output Enable bit
T2MOD—Timer 2 Mode Control Register
OSC
–
7
OSC
T2 PIN
T2 PIN
12
12
–
6
TRANSITION
DETECTOR
C/T2 = 0
C/T2 = 1
C/T2 = 0
C/T2 = 1
–
5
TR2
EXEN2
CONTROL
(DOWN COUNTING RELOAD VALUE)
(UP COUNTING RELOAD VALUE)
CONTROL
TR2
–
4
CONTR OL
RELO AD
RCAP2H
0FFH
TH2
RCAP2L
–
3
0FFH
RCAP2H
TL2
TH2
OVERFLOW
RCAP2L
TL2
–
2
T2EX PIN
Reset Value = XXXX XX00B
COUNT
DIRECTION
1=UP
0=DO
OVERFLOW
TOGGLE
T2OE
EXF2
TF2
1
INTERRUPT
TIMER 2
TF2
AT89C51RC
INTERRUPT
DCEN
EXF2
TIMER 2
0
15