ZGP323LAP4008G Zilog, ZGP323LAP4008G Datasheet - Page 39

• Manufacturer Part Number: ZGP323LAP4008G
• Description: IC Z8 GP MCU 8K OTP 40DIP
• Manufacturer: Zilog
• Series: Z8® GP™r

Specifications of ZGP323LAP4008G

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: HLVD, POR, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 237 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 40-DIP (0.620", 15.75mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Other names: 269-4425; ZGP323LAP4008G

Negative Edge
SCLK
PS023709-0208
Positive Edge
CTR0 D4, D3
Z8
Z8
®
®
Data Bus
Data Bus
Note:
Caution:
Clock
Select
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 timeout status bit (CTR0, D5) is set, and a timeout 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 timeout status bit (CTR0, D5), thereby generating an
interrupt 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
occurs). An initial count of 0 causes TC8 to count from 0 to
TC8H
HI8
Clock
h
denotes hexadecimal values.
Figure 18. 8-Bit Counter/Timer Circuits
8-Bit
Counter T8
FFh
is not a timeout condition.
TC8L
LO8
CTR0 D2
FFH
Product Specification
Figure
to
Functional Description
FEH
.
18.
CTR0 D1
ZGP323L
T8_OUT
IRQ4
35