AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 81
AT89C51RE2
Manufacturer Part Number
AT89C51RE2
Description
Manufacturer
Atmel Corporation
Specifications of AT89C51RE2
Flash (kbytes)
128 Kbytes
Max. Operating Frequency
60 MHz
Cpu
8051-12C
Max I/o Pins
34
Spi
1
Uart
2
Sram (kbytes)
8.25
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/OCD
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RE2-RLTEM
Manufacturer:
BPS
Quantity:
30 000
Company:
Part Number:
AT89C51RE2-RLTUM
Manufacturer:
MSC
Quantity:
1 560
Company:
Part Number:
AT89C51RE2-SLRUM
Manufacturer:
Atmel
Quantity:
759
Company:
Part Number:
AT89C51RE2-SLSUM
Manufacturer:
HONEYWELL
Quantity:
101
Company:
Part Number:
AT89C51RE2-UM
Manufacturer:
XILINX
Quantity:
101
7663E–8051–10/08
Table 53. 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
DCEN
T2OE
Bit
6
-
-
-
-
-
-
-
Description
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 bit
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
-
AT89C51RE2
T2OE
1
DCEN
0
81