N80C251TB24 Intel, N80C251TB24 Datasheet - Page 23

• 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
NOTES:
1. 24 MHz XTAL Frequency.
2. Specifications for PSEN# are identical to those for RD#.
3. In the formula, M = number of wait states (0 or 1) for ALE and N = Number of wait states (0,1,2 or 3) for
4. Device configured with the default data float timing for fast memory interface (EDF# = 1).
5. Device configured with extended data float timing for slow memory interface (EDF# = 0).
AVWL1
AVWL1A
AVWL2
AVWL2A
WHQX
QVWH
WHAX
Symbol
RD#/PSEN#/WR#.
Address (mux’d) Valid to
WR# Low
@ 16MHz
@ 24MHz
Address (mux’d) Valid to
WR# Low
@ 16MHz
@ 24MHz
Address (demux’d) Valid to
WR# Low
@ 16MHz
@ 24MHz
Address (demux’d) Valid to
WR# Low
@ 16MHz
@ 24MHz
Data Hold after WR# High
@ 16MHz
@ 24MHz
Data Valid to WR# High
@ 16MHz
@ 24MHz
WR# High to Address Hold
@ 16MHz
@ 24MHz
Parameter
Table 11. AC Characteristics (Sheet 4 of 4)
8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
43.4
72.5
51.7
66.4
93.4
49.5
28.7
68.4
70.4
@ Max F
Min
108
135
110
112
85
OSC
Max
(1)
2T
2T
2T
2T
2T
2T
T
(0.5+M)
(1+M)
(1+M)
(1+M)
OSC
(1+N)
OSC
OSC
OSC
OSC
OSC
OSC
Min
F
-13
OSC
+10
+10
-40
-17
-15
-13
Variable
Max
ns (3,4)
ns (3,5)
ns (3,4)
ns (3,5)
ns (3)
Units
ns
ns
17