cop8ame9 National Semiconductor Corporation, cop8ame9 Datasheet - Page 56
cop8ame9
Manufacturer Part Number
cop8ame9
Description
8-bit Cmos Flash Microcontroller With 8k Memory, Dual Op Amps, Virtual Eeprom, Temperature Sensor, 10-bit A/d And Brownout Reset
Manufacturer
National Semiconductor Corporation
Datasheet
1.COP8AME9.pdf
(83 pages)
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17.0 Stand-Alone Amplifier
A stand-alone Amplifier, AMP1, is provided on Port B. It
supports rail-to-rail inputs and outputs, and operates over
the entire V
addition to the programmable gain amplifier in the A/D Con-
verter. It is an alternate function on Port B.
It is enabled/disabled by the ENAMP1 bit in the ADGAIN
register described in the A/D Converter section. The normal
port B3–B5 pins should be configured in their high Z state
when using AMP1. It is disabled after Reset. The circuit will
only draw current when it’s enabled. When disabled, the
current drawn is extremely low.
When using the HALT mode of the device, AMP1 will draw
current unless it is disabled by software. Therefore, for mini-
mal current in HALT mode, AMP1 should be disabled prior to
entering HALT.
CC
and temperature range. This amplifier is in
56
The electrical parameters of AMP1 are shown in the Electri-
cal Characteristics section.
17.1 BLOCK DIAGRAM
FIGURE 30. Amplifier1 Block Diagram
20006359
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