UPD78F0535GB(T)-UEU-A NEC, UPD78F0535GB(T)-UEU-A Datasheet - Page 388

• Manufacturer Part Number: UPD78F0535GB(T)-UEU-A
• Description: 8BIT MCU, 60K FLASH, 3KB RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0535GB(T)-UEU-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 3KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 60KB
• Oscillator Type: External, Internal

<R>
(2) Error of baud rate
(3) Example of setting baud rate
388
115200
153600
312500
625000
19200
24000
31250
38400
48000
76800
Baud
[bps]
1200
2400
4800
9600
Rate
300
600
Remark TPS63 to TPS60: Bits 3 to 0 of clock selection register 6 (CKSR6) (setting of base clock (f
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
The baud rate error can be calculated by the following expression.
• Error (%) =
TPS63-
TPS60
8H
7H
6H
5H
4H
3H
2H
1H
1H
1H
0H
0H
0H
−
−
−
k:
f
ERR:
PRS
2. Make sure that the baud rate error during reception satisfies the range shown in (4)
f
PRS
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
13
13
13
13
13
13
13
21
16
13
21
13
9
−
−
−
k
:
reception destination.
Permissible baud rate range during reception.
= 2.0 MHz
Actual baud rate (baud rate with error)
Calculated
Desired baud rate (correct baud rate)
111111 −3.55
19231
23810
31250
38462
47619
76923
= −1.357 [%]
Value
1202
2404
4808
9615
301
601
−
−
−
= 10000000 / (2 × 33) = 151,515 [bps]
−0.79
−0.79
ERR
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
[%]
0
−
−
−
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
Table 15-5. Set Data of Baud Rate Generator
TPS63-
TPS60
CHAPTER 15 SERIAL INTERFACE UART6
7H
6H
5H
4H
3H
2H
1H
3H
4H
0H
2H
0H
1H
1H
0H
0H
f
PRS
65
65
65
65
65
65
65
13
65
13
33
11
k
5
8
8
4
User’s Manual U17260EJ6V0UD
= 5.0 MHz
Calculated
113636 −1.36
156250
312500
625000
19231
24038
31250
38462
48077
75758
Value
1202
2404
4808
9615
301
601
−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
[%]
− 1 × 100 [%]
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
TPS63-
TPS60
9H
8H
7H
6H
5H
4H
3H
5H
6H
2H
4H
1H
0H
1H
2H
2H
f
PRS
65
65
65
65
65
65
65
13
65
13
65
87
33
k
5
8
4
= 20.0 MHz
Calculated
114943 −0.22
151515 −1.36
312500
625000
19231
24038
31250
38462
48077
76923
XCLK6
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
0
0