UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 314
UPD78F0034BGC-8BS-A
Manufacturer Part Number
UPD78F0034BGC-8BS-A
Description
MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
Manufacturer
Renesas Electronics America
Datasheet
1.UPD78F0034BGK-9ET-A.pdf
(605 pages)
Specifications of UPD78F0034BGC-8BS-A
Package
64LQFP
Family Name
78K0
Maximum Speed
12 MHz
Ram Size
1 KB
Program Memory Size
32 KB
Operating Supply Voltage
2.5|3.3|5 V
Data Bus Width
8 Bit
Program Memory Type
Flash
Number Of Programmable I/os
51
Interface Type
3-Wire/UART
On-chip Adc
8-chx10-bit
Operating Temperature
-40 to 85 °C
Number Of Timers
3
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Baud Rate
600
1200
2400
4800
9600
19200
31250
38400
76800
115200
(bps)
The transmit/receive clock that is used to generate the baud rate is obtained by dividing the main system
clock.
• Transmit/receive clock generation for baud rate by using main system clock
Remark f
• Error tolerance range for baud rate
The main system clock is divided to generate the transmit/receive clock. The baud rate generated from
the main system clock is determined according to the following formula.
[Baud rate] =
f
n: Value set via TPS00 to TPS02 (0
k: Value set via MDL00 to MDL03 (0
The error for the baud rate depends on the number of bits per frame and the 5-bit counter’s division ratio
[1/(16 + k)].
Figure 16-7 shows an example of the baud rate error tolerance range.
X
: Main system clock oscillation frequency
BRGC0
f
X
7BH
6BH
5BH
4BH
3BH
2BH
1BH
When ASCK0 is selected as the source clock of the 5-bit counter, substitute the input clock frequency
to the ASCK0 pin for f
31H
12H
Table 16-2. Relationship Between Main System Clock and Baud Rate Error
= 8.3886 MHz
X
: Main system clock oscillation frequency
ERR (%)
1.10
1.10
1.10
1.10
1.10
1.10
1.10
1.10
1.3
2
n+1
(k + 16)
f
BRGC0
X
7AH
6AH
5AH
4AH
3AH
2AH
1AH
CHAPTER 16 SERIAL INTERFACE UART0
30H
11H
f
X
X
= 8.000 MHz
in the above expression.
[Hz]
ERR (%)
User’s Manual U14046EJ5V0UD
0.16
0.16
0.16
0.16
0.16
0.16
0.16
2.12
0
n
k
BRGC0
7)
f
2DH
78H
68H
58H
48H
38H
28H
18H
10H
14)
X
= 7.3728 MHz
ERR (%)
1.70
0
0
0
0
0
0
0
0
BRGC0
70H
60H
50H
40H
30H
24H
20H
10H
f
X
= 5.000 MHz
ERR (%)
1.73
1.73
1.73
1.73
1.73
1.73
1.73
0
BRGC0
f
7BH
6BH
5BH
4BH
3BH
2BH
1BH
21H
X
= 4.1943 MHz
ERR (%)
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.3
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