N80C251TB24 Intel, N80C251TB24 Datasheet - Page 21

• 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

T
T
T
T
T
T
T
T
T
T
T
T
LLRL
LLRLA
LHAX
LHAXA
RLDV
RLDVA
RHDX
RLAZ
RHDZ1
RHDZ1A
RHDZ2
RHDZ2A
Symbol
ALE Low to RD# or PSEN#
Low
@ 16MHz
@ 24MHz
ALE Low to RD# or PSEN#
Low
@ 16MHz
@ 24MHz
ALE High to Address Hold
@ 16MHz
@ 24MHz
ALE High to Address Hold
@ 16MHz
@ 24MHz
RD# or PSEN# Low to Valid
Data/Instruction In
@ 16MHz
@ 24MHz
RD# or PSEN# Low to Valid
Data/Instruction In
@ 16MHz
@ 24MHz
Data/Instruction Hold after
RD# or PSEN# High
@ 16MHz
@ 24MHz
RD#/PSEN# Low to
Address Float
@ 16MHz
@ 24MHz
Instruction Float after
PSEN# or RD# high
@ 16MHz
@ 24MHz
Instruction Float after
PSEN# or RD# high
@ 16MHz
@ 24MHz
Data Float after PSEN# or
RD# high
@ 16MHz
@ 24MHz
Data Float after PSEN# or
RD# high
@ 16MHz
@ 24MHz
Parameter
Table 11. AC Characteristics (Sheet 2 of 4)
8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
56.4
77.5
56.7
@ Max F
Min
10
10
20
20
98
0
0
OSC
182.5
120.1
53.4
33.4
57.5
36.7
93.4
Max
135
95
75
10
10
10
10
(1)
2T
2T
(0.5+M)
(1+M)
OSC
OSC
Min
10
20
0
F
OSC
+15
-27
Variable
2T
2T
2T
3T
T
(1+N)
(1+N)
OSC
OSC
OSC
OSC
Max
OSC
10
10
+10
-30
-50
-5
-5
ns (3,4)
ns (3,5)
ns (3,4)
ns (3,5)
ns (4)
ns (5)
ns (4)
ns (5)
ns (4)
ns (5)
Units
ns
ns
15