Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 119

• Manufacturer Part Number: Z8F16800144ZCOG
• Description: KIT DEV FOR Z8F642 MCU 44 PIN
• Manufacturer: Zilog
• Series: Z8 Encore!®r
• Type: MCUr

Specifications of Z8F16800144ZCOG

• Contents: Hardware, Software and Documentation
• For Use With/related Products: Z8F642
• For Use With: 269-4661 - KIT ACC ETHERNET SMART CABLE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4678

PS025011-1010
Architecture
Timer
Clock
The Noise Filter has the following features:
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Figure 12
Operation
Figure 13
The Noise Filter in this example is a 2-bit up/down counter which saturates at 00 and 11. A
2-bit counter is described for convenience, the operation of wider counters is similar. The
output of the filter switches from 1 to 0 when the counter counts down from 01 to 00 and
Synchronizes the receive input data to the Timer Clock
NFEN (Noise Filter Enable) input selects whether the Noise Filter is
NFCTL (Noise Filter Control) input selects the width of the up/down 
saturating counter digital filter. The available widths range from 4 bits to 11 bits
The digital filter output has hysteresis
Provides an active low “Saturated State” output (FiltSatB) which is used 
as an indication of the presence of noise
Available for operation in STOP mode
Timer
bypassed (NFEN=0) or included (NFEN=1) in the receive data path
displays how the Noise Filter is integrated with the Timer.
on page 106 displays the operation of the Noise Filter with and without noise.
Figure 12. Noise Filter System Block Diagram
NFEN, NFCTL
NEF
TxIN
TxOUT
P R E L I M I N A R Y
Noise Filter
Z8 Encore! XP
Product Specification
®
F1680 Series
TxIN
TxOUT
Timers
105