UPD78F0552MA-FAA-AX Renesas Electronics America, UPD78F0552MA-FAA-AX Datasheet - Page 497

• Manufacturer Part Number: UPD78F0552MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0552MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 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-L
(2) Error of baud rate
(3) Example of setting baud rate
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
Remark TPS63 to TPS60: Bits 3 to 0 of clock selection register 6 (CKSR6) (setting of base clock (f
The baud rate error can be calculated by the following expression.
• Error (%) =
Cautions 1. Keep the baud rate error during transmission to within the permissible error range at the
Example: Frequency of base clock = 10 MHz = 10,000,000 Hz
k:
f
ERR:
PRS
2. Make sure that the baud rate error during reception satisfies the range shown in (4) Permissible
Set value of MDL67 to MDL60 bits of BRGC6 register = 00100001B (k = 33)
Target baud rate = 153600 bps
Baud rate = 10 M / (2 × 33)
Error = (151515/153600 − 1) × 100
115200
153600
312500
625000
19200
24000
31250
38400
48000
76800
:
Baud
1200
2400
4800
9600
Rate
[bps]
300
600
reception destination.
baud rate range during reception.
Actual baud rate (baud rate with error)
Desired baud rate (correct baud rate)
= −1.357 [%]
TPS63-
TPS60
8H
7H
6H
5H
4H
3H
2H
1H
1H
1H
0H
0H
0H
= 10000000 / (2 × 33) = 151,515 [bps]
−
−
−
f
PRS
13
13
13
13
13
13
13
21
16
13
21
13
9
−
−
−
k
Value set by MDL67 to MDL60 bits of baud rate generator control register 6 (BRGC6) (k
= 4, 5, 6, ..., 255)
Peripheral hardware clock frequency
Baud rate error
= 2.0 MHz
Calculated
Table 14-5. Set Data of Baud Rate Generator
111111 −3.55
19231
23810
31250
38462
47619
76923
Value
1202
2404
4808
9615
301
601
−
−
−
−0.79
−0.79
ERR
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
[%]
0
−
−
−
TPS63-
TPS60
7H
6H
5H
4H
3H
2H
1H
3H
4H
0H
2H
0H
1H
1H
0H
0H
− 1 × 100 [%]
f
PRS
65
65
65
65
65
65
65
13
65
13
33
11
k
5
8
8
4
= 5.0 MHz
Calculated
113636 −1.36
156250
312500
625000
19231
24038
31250
38462
48077
75758
Value
1202
2404
4808
9615
301
601
CHAPTER 14 SERIAL INTERFACE UART6
−1.36
ERR
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
1.73
[%]
0
0
0
TPS63-
TPS60
8H
7H
6H
5H
4H
3H
2H
4H
5H
1H
3H
0H
0H
0H
1H
1H
f
PRS
65
65
65
65
65
65
65
13
65
13
65
43
33
5
8
4
k
= 10.0 MHz
Calculated
116279
151515 −1.36
312500
625000
19231
24038
31250
38462
48077
76923
Value
1202
2404
4808
9615
301
601
ERR
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.94
[%]
0
0
0
XCLK6
))
483