N80C251TB24 Intel, N80C251TB24 Datasheet - Page 12

• Manufacturer Part Number: N80C251TB24
• Description: IC MPU 8-BIT 5V 24MHZ 44-PLCC
• Manufacturer: Intel
• Series: 80Cr

Specifications of N80C251TB24

• Rohs Status: RoHS non-compliant
• Core Processor: MCS 251
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SIO
• Peripherals: PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Other names: 816721

8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
6
PLCC
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
DIP
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
V
P1.0/T2
P1.1/T2EX
P1.2/ECI/RXD1
P1.3/CEX0/TXD1
P1.4/CEX1
P1.5/CEX2
P1.6/CEX3/WAIT#
P1.7/CEX4/A17/WCLK
RST
P3.0/RXD
V
P3.1/TXD
P3.2/INT0#
P3.3/INT1#
P3.4/T0
P3.5/T1
P3.6/WR#
P3.7/RD#/A16
XTAL2
XTAL1
V
SS1
CC2
SS
Table 4. 8xC251TB/TQ Pin Assignment
Name
PLCC
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
DIP
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
V
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A13/P2.5
A14/P2.6
A15/P2.7
PSEN#
ALE
V
EA#
AD7/P0.7
AD6/P0.6
AD5/P0.5
AD4/P0.4
AD3/P0.3
AD2/P0.2
AD1/P0.1
AD0/P0.0
V
A12/P2.4
SS2
SS2
CC
Name