UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 422
UPD78F0413GA-GAM-AX
Manufacturer Part Number
UPD78F0413GA-GAM-AX
Description
8BIT UC, 32K FLASH, 1KB RAM, LCD
Manufacturer
NEC
Datasheet
1.UPD78F0413GA-GAM-AX.pdf
(562 pages)
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
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(3) Transmit operation
422
8-bit shift register
Baud rate clock
3-bit counter
In Manchester code generator mode, data is transmitted in 1- to 8-bit units.
Manchester code format. Transmission is enabled if bit 7 (MC0PWR) of MCG control register 0 (MC0CTL0) is
set to 1.
The output value while a transmission is suspended can be set by using bit 0 (MC0OLV) of the MC0CTL0
register.
A transmission starts by writing a value to the MCG transmit buffer register (MC0TX) after setting the transmit
data bit length to the MCG transmit bit count specification register (MC0BIT). At the transmission start timing, the
MC0BIT value is transferred to the 3-bit counter and the data of MC0TX is transferred to the 8-bit shift register.
An interrupt request signal (INTMCG) occurs at the timing that the MC0TX value is transferred to the 8-bit shift
register. The 8-bit shift register is continuously shifted by the baud rate clock, and signal that is XORed with the
baud rate clock is output from the MCGO pin.
When continuous transmission is executed, the next data is set to MC0BIT and MC0TX during data transmission
after INTMCG occurs.
To transmit continuously, writing the next transfer data to MC0TX must be complete within the period (3) and (4)
in Figure 16-8. Rewrite the MC0BIT before writing to MC0TX during continuous transmission.
MCGO pin
MC0PWR
MC0OLV
MC0OSL
MC0TSF
INTMCG
MC0BIT
MC0TX
“L”
Figure 16-8. Timing of Manchester Code Generator Mode (LSB First) (1/4)
(1) Transmit timing (MC0OLV = 1, total transmit bit length = 8 bits)
CHAPTER 16 MANCHESTER CODE GENERATOR
“10010110” “x1001011” “xx100101” “xxx10010”
“111”
“110”
User’s Manual U18698EJ1V0UD
“101”
“100”
“10010110” (8-bit data)
“111”
“xxxx1001”
“011”
“xxxxx100”
“010”
“xxxxxx10”
“001”
Data bits are transmitted in
“xxxxxxx1”
“000”
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