Z8F6421AN020EC00TR Zilog, Z8F6421AN020EC00TR Datasheet - Page 131

• Manufacturer Part Number: Z8F6421AN020EC00TR
• Description: IC ENCORE MCU FLASH 64K 44LQFP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F6421AN020EC00TR

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 44-LQFP
• For Use With: 269-4678 - KIT DEV FOR Z8F642 MCU 44 PIN269-4677 - KIT DEV FOR Z8F642 MCU 28PIN269-4540 - KIT DEV FOR Z8 ENCORE 16K TO 64K
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Z8F6421AN020EC00T

Table 59. UART Baud Rate High Byte Register (UxBRH)
Table 60. UART Baud Rate Low Byte Register (UxBRL)
PS019921-0308
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
7
7
For a given UART data rate, the integer baud rate divisor value is calculated using the
following equation:
The baud rate error relative to the desired baud rate is calculated using the following
equation:
For reliable communication, the UART baud rate error must never exceed 5 percent.
Table 61
used crystal oscillator frequencies.
UART Baud Rate Divisor Value (BRG)
UART Baud Rate Error (%)
provides information on data rate errors for popular baud rates and commonly
6
6
5
5
=
100
F46H and F4EH
F47H and F4FH
4
4
×


BRH
R/W
BRL
R/W
Actual Data Rate Desired Data Rate
------------------------------------------------------------------------------------------ -
1
1
=
Round
3
3
Desired Data Rate


System Clock Frequency (Hz)
------------------------------------------------------------------------
16
×
Z8 Encore! XP
UART Data Rate (bits/s)
–
2
2
Product Specification
1
1
®
F64XX Series




0
0
UART
117