ADC0804LCN/NOPB National Semiconductor, ADC0804LCN/NOPB Datasheet - Page 37

• Manufacturer Part Number: ADC0804LCN/NOPB
• Description: IC ADC 8BIT MPU COMPAT 20-DIP
• Manufacturer: National Semiconductor

Specifications of ADC0804LCN/NOPB

• Number Of Bits: 8
• Number Of Converters: 1
• Power Dissipation (max): 875mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *ADC0804LCN; *ADC0804LCN/NOPB; ADC0804

Functional Description
Note 29: All numerical values are hexadecimal representations.
5.3 Multiple A/D Converters in a Z-80 Interrupt Driven
Mode (Continued)
The following notes apply:
• It is assumed that the CPU automatically performs a RST
• The address bus from the Z-80 and the data bus to the
• A/D data and identifying words will be stored in sequen-
7 instruction when a valid interrupt is acknowledged
(CPU is in interrupt mode 1). Hence, the subroutine
starting address of X0038.
Z-80 are assumed to be inverted by bus drivers.
tial memory locations starting at the arbitrarily chosen
address X 3E00.
FIGURE 21. Software for Auto-Zeroed Differential A/D
(Continued)
37
• The stack pointer must be dimensioned in the main pro-
• The peripherals of concern are mapped into I/O space
gram as the RST 7 instruction automatically pushes the
PC onto the stack and the subroutine uses an additional
6 stack addresses.
with the following port assignments:
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