Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 22

• Manufacturer Part Number: Z0847006PSG
• Description: IC 6MHZ Z80 NMOS DART 40-DIP
• Manufacturer: Zilog
• Series: Z80r

Specifications of Z0847006PSG

• Processor Type: Z80
• Features: Dual Channel Asynchronous Receiver/Transmitter (DART)
• Speed: 6MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.620", 15.75mm)
• Mounting Style: Through Hole
• Cpu Speed: 6MHz
• Digital Ic Case Style: DIP
• No. Of Pins: 40
• Supply Voltage Range: 5V
• Operating Temperature Range: 0°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 847006
• Rohs Compliant: Yes
• Clock Frequency: 6MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant


UM008101-0601
<   % 2 7 2 G T K R J G T C N U
7 U G T / C P W C N
In Channel Control Register and Logic
The Channel Control register (8-bit) and Logic is written to by the CPU to
select the modes and parameters of the channel. Within the CTC device,
four such registers correspond to the four Counter/Timer channels. The
register to be written to is determined by the encoding of two channel select
input pins: CS0 and CS1, which are usually attached to A0 and A1 of the
CPU address bus. The channel values are described in Table 1.
Table 1. Channel Values
In the control word, which is written to program each Channel Control
register, bit 0 is always set; the other seven bits are programmed to select
alternatives on the channel’s operating modes and parameters. These values
are described in Table 2. For a more complete discussion, see “CTC
Operating Modes” on page 16 and “CTC Programming” on page 18).
Figure 2.
Internal Bus
CLK/TRG
CLK
Channel 0
Channel 1
Channel 2
Channel 3
Channel Block Diagram
Prescaler
CS0
0
0
1
1
Constant
Register
Channel
Control
Counter
Logic
Time
Down
8-Bit
CS1
0
1
0
1
ZC/TO
Counter/Timer Channels