UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 331

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

(2) Generation of serial clock
13.4.4 Calculation of baud rate
(1) Baud rate calculation expression
(2) Error of baud rate
Notes 1.
A serial clock to be generated can be specified by using baud rate generator control register 0 (BRGC0).
Select the clock to be input to the 5-bit counter by using bits 7 and 6 (TPS01 and TPS00) of BRGC0.
Bits 4 to 0 (MDL04 to MDL00) of BRGC0 can be used to select the division value (f
counter.
The baud rate can be calculated by the following expression.
f
k:
The baud rate error can be calculated by the following expression.
XCLK0
Baud rate =
Error (%) =
: Frequency of base clock selected by the TPS01 and TPS00 bits of the BRGC0 register
2.
Value set by the MDL04 to MDL00 bits of the BRGC0 register (k = 8, 9, 10, ..., 31)
TPS01
If the peripheral hardware clock (f
f
When selecting the TM50 output as the base clock, start the operation of 8-bit timer/event counter 50
first and then enable the timer F/F inversion operation (TMC501 = 1).
PRS
0
0
1
1
V
V
DD
DD
f
2
operating frequency varies depending on the supply voltage.
Actual baud rate (baud rate with error)
XCLK0
Desired baud rate (correct baud rate)
= 2.7 to 5.5 V: f
= 1.8 to 2.7 V: f
k
[bps]
TPS00
0
1
0
1
TM50 output
f
f
f
Table 13-4. Set Value of TPS01 and TPS00
PRS
PRS
PRS
PRS
PRS
CHAPTER 13 SERIAL INTERFACE UART0
/2
/2
/2
3
5
10 MHz
5 MHz
User’s Manual U18698EJ1V0UD
Note 2
PRS
1 MHz
250 kHz
62.5 kHz
f
PRS
) operates on the high-speed system clock (f
= 2 MHz
Base clock (f
1
2.5 MHz
625 kHz
156.25 kHz
f
100 [%]
PRS
XCLK0
= 5 MHz
) selection
4 MHz
1 MHz
250 kHz
f
PRS
Note 1
= 8 MHz
XCLK0
/8 to f
f
5 MHz
1.25 MHz
312.5 kHz
PRS
= 10 MHz
XCLK0
XH
) (XSEL = 1), the
/31) of the 5-bit
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