N80C251SQ16 Intel, N80C251SQ16 Datasheet - Page 22

• 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

22
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
5.3.1
EXTERNAL BUS CYCLES, NONPAGE MODE
RD#/PSEN#
†
P2/A16/A17
The value of this parameter depends on wait states. See the table of AC characteristics.
XTAL1
ALE
P0
Figure 7. External Bus Cycle: Code Fetch (Nonpage Mode)
T LLRL †
T LHLL †
T AVLL †
T AVRL †
T LHAX †
A15:8/A16/A17
A7:0
T AVDV1 †
T AVDV2 †
T LLAX
T RLAZ
T RLDV †
T RLRH †
T OSC
Instruction In
T RHDX
D7:0
T RHLH1
T RHDZ1
PRELIMINARY
A4211-03