N80C251SQ16 Intel, N80C251SQ16 Datasheet - Page 16

• Manufacturer Part Number: N80C251SQ16
• Description: IC MPU 8-BIT 5V 16MHZ 44-PLCC
• Manufacturer: Intel
• Series: 80Cr

Specifications of N80C251SQ16

• Rohs Status: RoHS non-compliant
• Core Processor: MCS 251
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SIO
• Peripherals: PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 512 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: 804459

16
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
5.1 D.C. Characteristics
Parameter values apply to all devices unless otherwise indicated.
V
V
V
V
V
V
V
NOTES:
1.
2.
3.
4.
Symbol
OL
OL
OH
IL
IL
IH
IH
1
1
1
Under steady-state (non-transient) conditions, I
If I
to sink current greater than the listed test conditions.
Capacitive loading on ports 0 and 2 may cause spurious noise pulses above 0.4 V on the low-level
outputs of ALE and ports 1, 2, and 3. The noise is due to external bus capacitance discharging into
the port 0 and port 2 pins when these pins change from high to low. In applications where capacitive
loading exceeds 100 pF, the noise pulses on these signals may exceed 0.8 V. It may be desirable to
qualify ALE or other signals with a Schmitt trigger or CMOS-level input logic.
Capacitive loading on ports 0 and 2 causes the V
tion when the address lines are stabilizing.
Typical values are obtained using V
OL
Maximum I
Maximum I
Maximum Total I
all output pins
exceeds the test conditions, V
Input Low Voltage
(except EA#)
Input Low Voltage
(EA#)
Input High Voltage
(except XTAL1, RST)
Input High Voltage
(XTAL1, RST)
Output Low Voltage
(Port 1, 2, 3)
Output Low Voltage
(Port 0, ALE, PSEN#)
Output High Voltage
(Port 1, 2, 3, ALE,
PSEN#)
Parameter
port 0
ports 1–3
OL
OL
per port pin: 10 mA
per 8-bit port:
OL
Table 9. DC Characteristics at V
for
0.2V
V
26 mA
15 mA
71 mA
V
V
0.7V
CC
CC
CC
-0.5
Min
OL
CC
CC
0
– 0.3
– 0.7
– 1.5
may exceed the related specification. Pins are not guaranteed
+ 0.9
CC
= 5.0, T
A
Typical
OL
= 25°C and are not guaranteed.
OH
must be externally limited as follows:
on ALE and PSEN# to drop below the specifica-
CC
0.2V
0.2V
= 4.5 – 5.5 V
V
V
CC
CC
0.45
0.45
Max
CC
CC
0.3
1.0
0.3
1.0
+ 0.5
+ 0.5
– 0.1
– 0.3
Units
PRELIMINARY
V
V
V
V
V
V
V
I
I
I
(Note 1, Note 2)
I
I
I
(Note 1, Note 2)
I
I
I
(Note 3)
Test Conditions
OL
OL
OL
OL
OL
OL
OH
OH
OH
= 100 µA
= 1.6 mA
= 3.5 mA
= 200 µA
= 3.2 mA
= 7.0 mA
= -10 µA
= -30 µA
= -60 µA