N80C251TB24 Intel, N80C251TB24 Datasheet - Page 34

• 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

8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
6.4
28
T
T
T
T
T
Symbol
XLXL
QVSH
XHQX
XHDX
XHDV
RXD
(Out)
RXD
† TI and RI are set during S1P1 of the peripheral cycle following the shift of the eighth bit.
TXD
(In)
AC Characteristics — Serial Port, Shift Register Mode
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
0
T XHDV
T XLXL
T QVXH
Figure 15. Serial Port Waveform — Shift Register Mode
T XHQX
Table 14. Serial Port Timing — Shift Register Mode
1
Valid
Parameter
T XHDX
2
Valid
3
T AV †
Valid
4
Valid
10T
2T
12T
OSC
OSC
Min
0
OSC
5
– 117
– 133
Valid
6
10T
Valid
OSC
Max
– 133
Set RI †
Set TI †
7
Valid
A2592-02
Units
ns
ns
ns
ns
ns