FIC98648 Datasheet, PDF (4/14 Pages) List of Unclassifed Manufacturers – Microprocessor for use with TGS4160 in automatic CO2 monitors

TECHNICAL INFORMATION FOR FIC98648
Category
Terminal
Name
Symbol
Pin
No.
Functions
Power supply
VDD 28 Connect to +4.4V power supply
Power
Ground
Reference voltage
VSS
VAREF
14 Connect to ground
6
Connect to 3.8V power supply (Reference voltage for A/D
converter)
Reset
Microprocessor
control
Clock in
Clock out
RESET
3
Microprocessor reset when "L" is input for one machine
cycle or longer
XIN
XOUT
2 _{Connect to ceramic oscillator of 4.19MHz}
1 ^{(ports to internal clock circuit)}
Initial warm-up time
R43 10
Settings
Benchmark adjustment
level (VL)
Benchmark adjustment
time (TK)
R50
R51
11
Input optional "H" or "L" signal
See Sec. 4-1 - Pins for initial setting of operation conditions
12
Auto reset time
R52 13
Gas sensor signal (Vg) AIN0
7
Input gas sensor signal (Vg)
See Sec. 4-2 - Gas sensor signal Vg input
Analog signal
input
Thermistor signal (VT)
AIN1
8
Thermistor signal (VT) for temperature compensation circuit
See Sec. 4-3 - Internal thermistor signal VT input
Control signal threshold AIN2
9
Calibration of CO2 levels for damper control
See Sec. 4-1-4 - Input signal for damper control
Switch input
Manual benchmark
reset
KEO 27 See Sec. 4-5 - Manual benchmark reset signal input
Bias signal
R90 24 See Sec. 4-4 - Bias signal output
Damper control signal R60 16 See Sec. 4-6-2 - Damper control signal output
Signal output
CO2 concentration
signal
R91 25 See Sec. 4-6-1 - PWM signal output for CO2 concentration
Green LED
R63 19 See Sec. 4-7 - LED display signal output
Red LED
R62 18 See Sec. 4-7 - LED display signal output
Test mode (Input)
R70 4 See Sec. 4-10 - Line test mode
Other
Malfunction (Output)
Benchmark renewal
status (Output)
R61 17 See Sec. 4-8 - Malfunction signal output
R92 26 See Sec. 4-9 - Benchmark renewal status signal output
Table 1 - Pin functions of FIC98648
Revised 08/03
4