UPD78F0500MC-5A4-A Renesas Electronics America, UPD78F0500MC-5A4-A Datasheet - Page 488

• Manufacturer Part Number: UPD78F0500MC-5A4-A
• Description: MCU 8BIT FLASH SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2r

Specifications of UPD78F0500MC-5A4-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2
R01UH0008EJ0401 Rev.4.01
Jul 15, 2010
Therefore, the maximum receivable baud rate at the transmission destination is as follows.
Similarly, the maximum permissible data frame length can be calculated as follows.
Therefore, the minimum receivable baud rate at the transmission destination is as follows.
The permissible baud rate error between UART6 and the transmission destination can be calculated from the above
minimum and maximum baud rate expressions, as follows.
Remarks 1. The permissible error of reception depends on the number of bits in one frame, input clock frequency,
10
11
Minimum permissible data frame length: FLmin = 11 × FL −
× FLmax = 11 × FL −
4
8
20
50
100
255
FLmax =
Division Ratio (k)
BRmax = (FLmin/11)
BRmin = (FLmax/11)
2. k: Set value of BRGC6
and division ratio (k). The higher the input clock frequency and the higher the division ratio (k), the
higher the permissible error.
21k – 2
20k
Table 15-6. Maximum/Minimum Permissible Baud Rate Error
FL × 11
k + 2
2 × k
Maximum Permissible Baud Rate Error
−
−
× FL =
1
1
=
=
21k + 2
21k − 2
22k
20k
21k − 2
2 × k
+2.33%
+3.53%
+4.26%
+4.56%
+4.66%
+4.72%
Brate
Brate
FL
k − 2
2k
CHAPTER 15 SERIAL INTERFACE UART6
× FL =
Minimum Permissible Baud Rate Error
21k + 2
2k
FL
−2.44%
−3.61%
−4.31%
−4.58%
−4.67%
−4.73%
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