AT89C51RC Atmel Corporation, AT89C51RC Datasheet - Page 2

• Manufacturer Part Number: AT89C51RC
• Manufacturer: Atmel Corporation

Specifications of AT89C51RC

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Uart: 1
• Sram (kbytes): 0.5
• Operating Voltage (vcc): 4.0 to 6.0
• Timers: 3
• Watchdog: Yes

2. Pin Configurations
2.1
2.2
2.3
2
44A – 44-lead TQFP
44J – 44-lead PLCC
40P6 – 40-lead PDIP
AT89C51RC
(RXD) P3.0
(INT0) P3.2
(INT1) P3.3
(TXD) P3.1
(T0) P3.4
(T1) P3.5
P1.5
P1.6
P1.7
RST
(INT0) P3.2
(INT1) P3.3
(RXD) P3.0
(TXD) P3.1
NC
(T0) P3.4
(T1) P3.5
P1.5
P1.6
P1.7
RST
1
2
3
4
5
6
7
8
9
10
11
NC
(T2EX) P1.1
(INT0) P3.2
(INT1) P3.3
(RXD) P3.0
(TXD) P3.1
(WR) P3.6
(RD) P3.7
(T2) P1.0
(T0) P3.4
(T1) P3.5
7
8
9
10
11
12
13
14
15
16
17
XTAL2
XTAL1
GND
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VCC
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA/VPP
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)
39
38
37
36
35
34
33
32
31
30
29
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA/VPP
NC
ALE/PROG
PSEN
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
33
32
31
30
29
28
27
26
25
24
23
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA/VPP
NC
ALE/PROG
PSEN
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
1920D–MICRO–6/08