z16f2811 ZiLOG Semiconductor, z16f2811 Datasheet - Page 263

• Manufacturer Part Number: z16f2811
• Description: High Performance Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 130. ADC Timer0 Capture Register, low byte (ADCTCAP_L)
BITS
FIELD
RESET
R/W
ADDR
Comparator and Operational Amplifier Overview
PS022006-0207
Bit Position
[7:0]
00H - FFH
7
Value (H) Description
The ZNEO devices feature a general-purpose comparator and an operational amplifier.
The comparator is a moderate speed (200 ns propagation delay) device which is designed
for a maximum input offset of 5 mV. The comparator is used to compare two analog input
signals. General-purpose input pins (CINP and CINN) provides the comparator inputs.
The output is available as an interrupt source.
The operational amplifier is a two-input, one-output operational amplifier with a typical
open loop gain of 10,000 (80 dB). The general-purpose input pin (OPINP) provides the
non-inverting amplifier input, while general-purpose input pin (OPINN) provides the
inverting amplifier input. The output is available at the output pin (OPOUT).
The key operating characteristics of the operational amplifier are:
•
•
•
•
•
•
Frequency compensated for unity gain stability.
Input common-mode-range from GND (0.0 V) to VDD-1 V.
Input offset voltage less than 15 mV.
Output voltage swing from GND + 0.1 V to V
Input bias current less than 1 μA.
Operating the operational amplifier open loop (no feedback) effectively provides
another on-chip comparator.
ADC Timer0 Count Low Byte
The Timer0 count is held in the data registers until the next ADC conversion is
started.
6
5
P R E L I M I N A R Y
4
ADCTCAPL
FF-E513H
R
X
3
DD
– 0.1 V.
2
Product Specification
ZNEO
1
Analog Functions
™
Z16F Series
0
249