Z85C3008VSG Zilog, Z85C3008VSG Datasheet - Page 65

• Manufacturer Part Number: Z85C3008VSG
• Description: IC 8MHZ Z8500 CMOS SCC 44-PLCC
• Manufacturer: Zilog
• Series: SCCr

Specifications of Z85C3008VSG

• Processor Type: Z80
• Features: Error Detection and Multiprotocol Support
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 44-LCC (J-Lead)
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Cpu Speed: 8MHz
• Digital Ic Case Style: LCC
• No. Of Pins: 44
• Supply Voltage Range: 5V
• Operating Temperature Range: 0°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 85
• Rohs Compliant: Yes
• Clock Frequency: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-3932; Z85C3008VSG

SCC™/ESCC™ User’s Manual
SCC/ESCC Ancillary Support Circuitry
3.3 DATA ENCODING/DECODING
Data encoding is utilized to allow the transmission of clock
and data information over the same medium. This saves
the need to transmit clock and data over separate medium
as would normally be required for synchronous data. The
SCC provides four different data encoding methods,
selected by bits D6 and D5 in WR10. An example of these
3-4
(Biphase Space)
MANCHESTER
(Biphase Mark)
DATA
NRZI
NRZ
FM1
FM0
1
1
Figure 3-3. Data Encoding Methods
0
0
1
four encoding methods is shown in Figure 3-3. Any
encoding method is used in any X1 mode in the SCC,
asynchronous or synchronous. The data encoding
selected is active even though the transmitter or receiver
is idling or disabled.
0
Bit Cell Level:
High = 1
Low = 0
No Change = 1
Change = 0
Bit Center Transition:
Transition = 1
No Transition = 0
No Transition = 1
Transition = 0
High
Low
High = 0
Low = 1
UM010901-0601