Z8F6401VN020SC00TR Zilog, Z8F6401VN020SC00TR Datasheet - Page 110

• Manufacturer Part Number: Z8F6401VN020SC00TR
• Description: IC ENCORE MCU FLASH 64K 44PLCC
• Manufacturer: Zilog
• Series: Encore!®r

Specifications of Z8F6401VN020SC00TR

• 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: 0°C ~ 70°C
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Z8F6401VN020SC00T

Table 57. UARTx Baud Rate Low Byte Register (UxBRL)
PS017610-0404
RESET
FIELD
ADDR
BITS
R/W
UART Baud Rate Divisor Value (BRG)
UART Baud Rate Error (%)
R/W
7
1
UART Baud Rate (bits/s)
The UART data rate is calculated using the following equation:
For a given UART data rate, the integer baud rate divisor value is calculated using the fol-
lowing equation:
The baud rate error relative to the desired baud rate is calculated using the following equa-
tion:
For reliable communication, the UART baud rate error must never exceed 5 percent.
Table 58 provides information on data rate errors for popular baud rates and commonly
used crystal oscillator frequencies.
R/W
6
1
R/W
5
1
=
=
100
--------------------------------------------------------------------------------------------- -
16 UART Baud Rate Divisor Value
R/W
F47H and F4FH
4
1
×
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
×
System Clock Frequency (Hz)
⎛
⎝
BRL
=
Actual Data Rate Desired Data Rate
------------------------------------------------------------------------------------------------ -
Round
R/W
3
1
⎛
⎝
Desired Data Rate
System Clock Frequency (Hz)
--------------------------------------------------------------------------- -
16 UART Data Rate (bits/s)
×
R/W
2
1
–
R/W
1
1
Z8 Encore!
R/w
0
1
UART
⎞
⎠
⎞
⎠
®
92