Z8F011AQB020EC Zilog, Z8F011AQB020EC Datasheet - Page 126
Z8F011AQB020EC
Manufacturer Part Number
Z8F011AQB020EC
Description
IC ENCORE XP MCU FLASH 1K 8-QFN
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F011AQB020EC
Core Processor
Z8
Core Size
8-Bit
Speed
20MHz
Connectivity
IrDA, UART/USART
Peripherals
Brown-out Detect/Reset, LED, LVD, POR, PWM, WDT
Number Of I /o
6
Program Memory Size
1KB (1K x 8)
Program Memory Type
FLASH
Eeprom Size
16 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
8-VQFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Other names
269-3644
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Table 70. UART Baud Rates
PS022825-0908
10.0 MHz System Clock
Acceptable
Rate (kHz)
1250.0
625.0
250.0
115.2
57.6
38.4
19.2
9.60
4.80
2.40
1.20
0.60
0.30
BRG Divisor
The UART data rate is calculated using the following equation:
For a given UART data rate, calculate the integer baud rate divisor value using the follow-
ing equation:
The baud rate error relative to the acceptable baud rate is calculated using the following
equation:
For reliable communication, the UART baud rate error must never exceed 5 percent.
Table 70
used crystal oscillator frequencies.
(Decimal)
1042
2083
N/A
130
260
521
16
33
65
11
UART Baud Rate (bits/s)
UART Baud Rate Divisor Value (BRG)
1
3
5
UART Baud Rate Error (%)
provides information on the data rate errors for popular baud rates and commonly
Actual Rate
208.33
625.0
125.0
(kHz)
56.8
39.1
18.9
9.62
4.81
2.40
1.20
0.60
0.30
N/A
-16.67
Error
-1.36
-0.03
-0.03
-0.03
0.00
8.51
1.73
0.16
0.16
0.16
N/A
(%)
0.2
=
----------------------------------------------------------------------------------------------- -
16
=
100
System Clock Frequency (Hz)
×
UART Baud Rate Divisor Value
5.5296 MHz System Clock
Acceptable
×
Rate (kHz)
⎛
⎝
1250.0
Actual Data Rate Desired Data Rate
--------------------------------------------------------------------------------------------------- -
625.0
250.0
115.2
57.6
38.4
19.2
9.60
4.80
2.40
1.20
0.60
0.30
=
Round
Universal Asynchronous Receiver/Transmitter
Desired Data Rate
BRG Divisor
⎛
⎝
System Clock Frequency (Hz)
------------------------------------------------------------------------------ -
(Decimal)
Z8 Encore! XP
16
1152
N/A
N/A
144
288
576
×
18
36
72
1
3
6
9
UART Data Rate (bits/s)
–
Product Specification
Actual Rate
(kHz)
345.6
115.2
®
57.6
38.4
19.2
9.60
4.80
2.40
1.20
0.60
0.30
N/A
N/A
F082A Series
⎞
⎠
38.24
Error
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
N/A
N/A
(%)
⎞
⎠
115
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