ZUSBOPTSC01ZAC Zilog, ZUSBOPTSC01ZAC Datasheet - Page 40

• Manufacturer Part Number: ZUSBOPTSC01ZAC
• Description: KIT ACC OPTO-ISO USB SMART CABLE
• Manufacturer: Zilog

Specifications of ZUSBOPTSC01ZAC

• Accessory Type: Opto-isolated USB Smart Cable
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• For Use With/related Products: Z8 Encore! Dev. Kits
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-2287

Negative Edge
SCLK
PS020823-0208
Positive Edge
CTR0 D4, D3
Z8 Data Bus
Z8 Data Bus
Note:
Caution:
Select
Clock
When T8 is enabled, the output T8_OUT switches to the initial value (CTR1, D1). If the
initial value (CTR1, D1) is 0, TC8L is loaded; otherwise, TC8H is loaded into the counter.
In SINGLE-PASS mode (CTR0, D6), T8 counts down to 0 and stops, T8_OUT toggles,
the time-out status bit (CTR0, D5) is set, and a time-out interrupt can be generated if it is
enabled (CTR0, D1). In MODULO-N mode, upon reaching terminal count, T8_OUT is
toggled, but no interrupt is generated. From that point, T8 loads a new count (if the
T8_OUT level now is 0), TC8L is loaded; if it is 1, TC8H is loaded. T8 counts down to 0,
toggles T8_OUT, and sets the time-out status bit (CTR0, D5), thereby generating an inter-
rupt if enabled (CTR0, D1). One cycle is thus completed. T8 then loads from TC8H or
TC8L according to the T8_OUT level and repeats the cycle, see
You can modify the values in TC8H or TC8L at any time. The new values take effect
when they are loaded.
The letter
Transition from 0 to
To ensure known operation do not write these registers at the time the values are to be
loaded into the counter/timer. An initial count of 1 is not allowed (a non-function oc-
curs)
.
TC8H
An initial count of 0 causes TC8 to count from 0 to
HI8
Clock
h
denotes hexadecimal values.
Figure 18. 8-Bit Counter/Timer Circuits
FFh
Counter T8
8-Bit
is not a timeout condition.
TC8L
LO8
CTR0 D2
FFh
Product Specification
Figure
to
Crimzon
FEh
Functional Description
18.
.
CTR0 D1
®
ZLP32300
T8_OUT
IRQ4
36