N80C251SQ16 Intel, N80C251SQ16 Datasheet - Page 31

• 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

5.4 AC Characteristics — Serial Port, Shift Register Mode
5.5 External Clock Drive
T
T
T
T
T
Symbol
XLXL
QVSH
XHQX
XHDX
XHDV
PRELIMINARY
Symbol
(Out)
RXD
RXD
† TI and RI are set during S1P1 of the peripheral cycle following the shift of the eighth bit.
1/T
TXD
(In)
T
T
T
T
CHCX
CLCH
CHCL
CLCX
CLCL
Serial Port Clock Cycle Time
Output Data Setup to Clock Rising Edge
Output Data hold after Clock Rising Edge
Input Data Hold after Clock Rising Edge
Clock Rising Edge to Input Data Valid
Valid
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
0
T XLXL
T XHDV
Oscillator Frequency (F
T QVXH
Figure 17. Serial Port Waveform — Shift Register Mode
T XHQX
Table 14. Serial Port Timing — Shift Register Mode
1
Valid
Parameter
Parameter
High Time
Rise Time
Low Time
Fall Time
T XHDX
Table 15. External Clock Drive
2
Valid
OSC
3
T AV †
)
Valid
4
Valid
10T
2T
Min
20
20
12T
OSC
OSC
Min
0
5
OSC
– 117
– 133
Valid
6
10T
Valid
Max
16
10
10
OSC
Max
– 133
Set RI †
Set TI †
7
Valid
Units
A2592-02
MHz
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
31