ZGP323LEP4008C Zilog, ZGP323LEP4008C Datasheet - Page 50

• Manufacturer Part Number: ZGP323LEP4008C
• Description: IC Z8 GP MCU 8K OTP 40DIP
• Manufacturer: Zilog
• Series: Z8® GP™r

Specifications of ZGP323LEP4008C

• 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 ~ 105°C
• Package / Case: 40-DIP (0.620", 15.75mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Other names: 269-3590

PS023709-0208
* Preliminary value including pin parasitics
Clock
The device’s on-chip oscillator has a high-gain, parallel-resonant amplifier, for connection
to a crystal, ceramic resonator, or any suitable external clock source (XTAL1 = Input,
XTAL2 = Output). The crystal must be AT cut, 1 MHz to 8 MHz maximum, with a series
resistance (RS) less than or equal to 100
suitable external clock source.
The crystal must be connected across XTAL1 and XTAL2 using the recommended
capacitors from each pin to ground. The typical capacitor value is 10 pF for 8 MHz. Also
check with the crystal supplier for the optimum capacitance.
ZGP323L supports crystal, resonator, and oscillator. Most resonators have a frequency
tolerance of less than +/-0.5% which is adequate for remote control applications. The
typical resonator has a very fast start up time on the order of a few hundred microseconds.
Most crystals have a frequency tolerance of less than 50 ppm (+/-0.005%). Crystal
oscillators, however, require a much longer start-up time because the large loading
capacitance slows down oscillation start-up. Zilog
of no more than 10 pF for crystal oscillators. If the stray capacitance of the PCB or the
crystal is High, the loading capacitance C1 and C2 should be further reduced to ensure
stable oscillation before T
page 83, for more information).
For Stop Mode Recovery operation, Bit 5 of the SMR register allows you to select the
Stop Mode Recovery delay (T
Crystal
C1, C2 = 10 pF TYP *
f = 8 MHz
C1
C2
Figure 29. Oscillator Configuration
POR
XTAL
XTAL1
POR
(Power-On Reset Time is typically 5-6 ms. See
). If it is not selected, the MCU will execute instruction
Ω
. The on-chip oscillator can be driven with a
Ceramic Resonator f = 8 MHz
External Clock
®
recommends using loading capacitors
XTAL
XTAL1
XTAL
XTAL1
Product Specification
Functional Description
Table 23
ZGP323L
on
46