Z8F041APH020SG2156 ZiLOG, Z8F041APH020SG2156 Datasheet - Page 218

• Manufacturer Part Number: Z8F041APH020SG2156
• Description: 8-bit Microcontrollers - MCU 4K FLASH 1K RAM 128B NVDS
• Manufacturer: ZiLOG

Specifications of Z8F041APH020SG2156

• Rohs: yes
• Core: eZ8
• Processor Series: Z8F041xx
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 4 KB
• Data Ram Size: 1 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.7 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: PDIP-20
• Mounting Style: Through Hole
• A/d Bit Size: 10 bit
• A/d Channels Available: 8
• Interface Type: UART
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 17
• Number Of Timers: 2
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V

PS022827-1212
Oscillator Operation with an External RC Network
Figure 28. Connecting the On-Chip Oscillator to an External RC Network
Figure 28 displays a recommended configuration for connection with an external resistor-
capacitor (RC) network.
An external resistance value of 45 k is recommended for oscillator operation with an
external RC network. The minimum resistance value to ensure operation is 40 kThe
typical oscillator frequency can be estimated from the values of the resistor (R in k) and
capacitor (C in pF) elements using the following equation:
Figure 29 displays the typical (3.3 V and 25°C) oscillator frequency as a function of the
capacitor (C, in pF) employed in the RC network assuming a 45 K external resistor. For
very small values of C, the parasitic capacitance of the oscillator X
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.
Oscillator Frequency (kHz)
P R E L I M I N A R Y
VDD
=
------------------------------------------------------ -

0.4
R
C

R

1
10
X
C
IN

6
+

Oscillator Operation with an External RC
4

C
Z8 Encore! XP

Product Specification
IN
pin and the printed
®
F082A Series
201