UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 326

• 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

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

(3) Relationship between main system clock and baud rate
(4) Bit rate and pulse width
324
Baud rate
115.2
Bit Rate
Table 16-4 shows the relationship between the main system clock and the baud rate.
Table 16-5 lists the bit rate, bit rate error tolerance, and pulse width values.
(kbps)
Notes 1. Operation with f
Caution
Remark f
Figure 16-12. Data Format Comparison Between Infrared Data Transfer Mode and UART Mode
Note 1
2. When a digital noise eliminator is used in a microcontroller operating at 1.41 MHz or above.
Start bit
Start bit
Bit time
Bit Rate Error Tolerance
X
When using baud rate generator control register 0 (BRGC0) in infrared data transfer mode,
set it to 10H.
: Main system clock oscillation frequency
0
0
Table 16-4. Relationship Between Main System Clock and Baud Rate
(% of Bit Rate)
131031 bps
f
X
+/ 0.87
= 8.3886 MHz
D0
1
1
X
Table 16-5. Bit Rate and Pulse Width Values
= 7.3728 MHz
D1
0
0
CHAPTER 16 SERIAL INTERFACE UART0
125000 bps
Pulse Width Minimum Value
f
X
= 8.000 MHz
D2
User’s Manual U14046EJ5V0UD
1
1
( s)
1.41
Note 2
D3
UART frame
0
0
Data bits
IR frame
Data bits
115200 bps
f
X
D4
= 7.3728 MHz
0
0
D5
1
1
<Nominal Value>
3/16 Pulse Width
1.63
( s)
78125 bps
f
D6
X
1
1
= 5.000 MHz
Pulse width =
3/16 bit time
D7
0
0
Maximum Pulse Width
Stop bit
Stop bit
65536 bps
f
1
1
X
= 4.1943 MHz
2.71
( s)