UPD78F0411GA-GAM-AX Datasheet, PDF (520/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 24 FLASH MEMORY
24.6.3 Selecting communication mode
In the 78K0/LC3, a communication mode is selected by inputting pulses to the FLMD0 pin after the dedicated flash
memory programming mode is entered. These FLMD0 pulses are generated by the flash memory programmer.
The following table shows the relationship between the number of pulses and communication modes.
Table 24-6. Communication Modes
Communication
Mode
Port
Standard Setting^{Note 1}
Speed
Frequency
Multiply Rate
Pins Used
UART
(UART6)
UART-Ext-Osc
115,200 bps^{Note 3} 2 to 10 MHz^{Note 2} 1.0
UART-Ext-FP4CK
TxD6, RxD6
Peripheral Number of
Clock
FLMD0
Pulses
fX
0
fEXCLK
3
Notes 1. Selection items for Standard settings on GUI of the flash memory programmer.
2. The possible setting range differs depending on the voltage. For details, see CHAPTER 27 ELECTRICAL
SPECIFICATIONS (STANDARD PRODUCTS).
3. Because factors other than the baud rate error, such as the signal waveform slew, also affect UART
communication, thoroughly evaluate the slew as well as the baud rate error.
Caution When UART6 is selected, the receive clock is calculated based on the reset command sent from the
dedicated flash memory programmer after the FLMD0 pulse has been received.
Remark fX: X1 clock
fEXCLK: External main system clock
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User’s Manual U18698EJ1V0UD