N80C251TB24 Intel, N80C251TB24 Datasheet - Page 11

• 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

P1.7 / CEX4 / A17 / WCLK
P1.6 / CEX3 / WAIT#
P1.3 / CEX0 / TXD1
P1.2 / ECI / RXD1
P3.7 / RD# / A16
Figure 4. 8xC251TB/TQ 40-pin PDIP Packages
P3.2 / INT0#
P3.3 / INT1#
P1.4 / CEX1
P1.5 / CEX2
P1.1 / T2EX
P3.6 / WR#
P3.0 / RXD
P3.1 / TXD
P1.0 / T2
P3.4 / T0
P3.5 / T1
8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
XTAL2
XTAL1
RST
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
8XC251TB
8XC251TQ
on PC board
as mounted
component
View of
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
V
AD0 / P0.0
AD1 / P0.1
AD2 / P0.2
AD3 / P0.3
AD4 / P0.4
AD5 / P0.5
AD6 / P0.6
AD7 / P0.7
EA#
ALE
PSEN#
A15 / P2.7
A14 / P2.6
A13 / P2.5
A12 / P2.4
A11 / P2.3
A10 / P2.2
A9 / P2.1
A8 / P2.0
CC
B2978-01
5