AT89C51RC2 Atmel Corporation, AT89C51RC2 Datasheet - Page 30
AT89C51RC2
Manufacturer Part Number
AT89C51RC2
Description
Manufacturer
Atmel Corporation
Specifications of AT89C51RC2
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
60 MHz
Cpu
8051-12C
Max I/o Pins
32
Spi
1
Uart
1
Sram (kbytes)
1.25
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RC2-3CSUM
Manufacturer:
ATMEL
Quantity:
15 569
Company:
Part Number:
AT89C51RC2-CM
Manufacturer:
ATMEL
Quantity:
8 831
Part Number:
AT89C51RC2-CM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89C51RC2-IM
Manufacturer:
ATMEL
Quantity:
719
Part Number:
AT89C51RC2-IM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89C51RC2-RLRIL
Manufacturer:
Atmel
Quantity:
1 495
Company:
Part Number:
AT89C51RC2-RLTIL
Manufacturer:
ATMEL
Quantity:
5 000
Part Number:
AT89C51RC2-RLTUM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
30
AT89C51RB2/RC2
Table 21. T2MOD Register
T2MOD – Timer 2 Mode Control Register (C9h)
Reset Value = XXXX XX00b
Not bit addressable
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
DCEN
T2OE
Bit
6
-
-
-
-
-
-
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Timer 2 Output Enable Bitt
Cleared to program P1.0/T2 as clock input or I/O port.
Set to program P1.0/T2 as clock output.
Down Counter Enable Bit
Cleared to disable Timer 2 as up/down counter.
Set to enable Timer 2 as up/down counter.
5
-
4
-
3
-
2
-
T2OE
1
4180E–8051–10/06
DCEN
0