AT89C51RC2 Atmel Corporation, AT89C51RC2 Datasheet - Page 9

• Manufacturer Part Number: AT89C51RC2
• 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

Pin Configurations
Figure 2. Pin Configurations
4180E–8051–10/06
P1.5/CEX2/MISO
*NIC: No Internal Connection
P1.7CEX4/MOSI
P1.6/CEX3/SCK
P1.1/T2EX/SS
P1.4/CEX1
P1.3CEX0
P3.2/INT0
P3.3/INT1
P3.0/RxD
P3.1/TxD
P1.2/ECI
P3.6/WR
P3.7/RD
P1.0/T2
P3.4/T0
P3.5/T1
XTAL2
XTAL1
VSS
RST
4
10
12
13
14
1
3
5
6
7
11
15
16
17
2
8
9
18
19
20
PDIL40
25
24
40
36
34
33
29
26
23
22
39
38
37
35
32
31
30
28
27
21
P1.6/CEX3/SCK
P1.7/CEX4/MOSI
P1.5/CEX2/MISO
P0.0/AD0
P0.1/AD1
P0.2/AD2
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
EA
ALE/PROG
PSEN
P2.7/A15
P2.6/A14
P2.5/A13
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P2.0/A8
VCC
P0.3/AD3
NIC*
P3.2/INT0
P3.3/INT1
P3.0/RxD
P3.1/TxD
P3.4/T0
P3.5/T1
RST
1
3
4
5
6
7
10
11
2
8
9
44
12 13
43 42 41 40 39
14
15
VQFP44 1.4
16
17
38 37 36 35 34
18
P1.5/CEX2/MISO
P1.7/CEx4/MOSI
P1.6/CEX3/SCK
19
20
P3.2/INT0
P3.3/INT1
P3.0/RxD
P3.1/TxD
21 22
P3.4/T0
P3.5/T1
NIC*
RST
26
32
30
28
27
25
24
23
33
31
29
14
10
12
13
8
11
15
16
17
7
9
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
EA
NIC*
ALE/PROG
PSEN
P2.7/A15
P2.6/A14
P2.5/A13
18 19
6
5 4 3 2 1
AT89C51RB2/RC2
20
21
22
PLCC44
23
24
44 43 42 41 40
25
26
27 28
32
38
36
34
33
39
37
35
31
30
29
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
EA
NIC*
ALE/PROG
PSEN
P2.7/A15
P2.6/A14
P2.5/A13
9