Z8F022ASJ020SC Zilog, Z8F022ASJ020SC Datasheet - Page 207

• Manufacturer Part Number: Z8F022ASJ020SC
• Description: IC ENCORE XP MCU FLASH 2K 28SOIC
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F022ASJ020SC

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 23
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3355

Figure 29. Typical RC Oscillator Frequency as a Function of the External Capacitance with
PS022825-0908
4000
3750
3500
3250
3000
2750
2500
2250
2000
1750
1500
1250
1000
750
500
250
0
Caution:
0
20
Figure 29
capacitor (C in pF) employed in the RC network assuming a 45 KΩ external resistor. For
very small values of C, the parasitic capacitance of the oscillator XIN pin and the printed
circuit board must be included in the estimation of the oscillator frequency.
It is possible to operate the RC oscillator using only the parasitic capacitance of the pack-
age and printed circuit board. To minimize sensitivity to external parasitics, external
capacitance values in excess of 20 pF are recommended.
40
60
80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500
When using the external RC oscillator mode, the oscillator can stop
oscillating if the power supply drops below 2.7 V, but before the power
supply drops to the Voltage Brownout threshold. The oscillator resumes
oscillation when the supply voltage exceeds 2.7 V.
displays the typical (3.3 V and 25 °C) oscillator frequency as a function of the
a 45 kΩ Resistor
C (pF)
Z8 Encore! XP
Product Specification
®
F082A Series
Crystal Oscillator
196