ZUSBOPTSC01ZAC Zilog, ZUSBOPTSC01ZAC Datasheet - Page 50

• 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

PS020823-0208
Clock
C1
C2
Crystal
C1, C2 = 10 pF *
f = 8 MHz
*Note: preliminary value.
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 capac-
itors 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.
Zilog’s IR MCU supports crystal, resonator, and oscillator. Most resonators have a
frequency tolerance of less than ±0.5%, which is enough for remote control application.
Resonator has a very fast startup time, which is around few hundred microseconds. Most
crystals have a frequency tolerance of less than 50 ppm (±0.005%). However, crystal
needs longer startup time than the resonator. The large loading capacitance slows down the
oscillation startup time. Zilog
the crystal. If the stray capacitance of the PCB or the crystal is high, the loading
capacitance C1 and C2 must be reduced further to ensure stable oscillation before the
T
For Stop Mode Recovery operation, bit 5 of SMR register allows you to select the Stop
Mode Recovery delay, which is the T
MCU executes instruction immediately after it wakes up from the STOP mode. If
resonator or crystal is used as a clock source then Stop Mode Recovery delay needs to be
selected (bit 5 of SMR = 1).
POR
(Power-On Reset time is typically 5-6 ms, see
XTAL1
XTAL2
Figure 29. Oscillator Configuration
®
suggests not to use more than 10 pF loading capacitor for
External Clock
POR
XTAL1
XTAL2
. If Stop Mode Recovery delay is not selected, the
Ω
. The on-chip oscillator can be driven with a
Table 20
Ceramic Resonator f = 8 MHz
on page 79).
Product Specification
Crimzon
Functional Description
XTAL1
XTAL2
®
ZLP32300
46