CHAPTER 26 FLASH MEMORY
User’s Manual U16899EJ2V0UD
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26.7.3 Selecting communication mode
In the 78K0/KE1+, a communication mode is selected by inputting pulses (up to 11 pulses) to the FLMD0 pin after
the dedicated flash memory programming mode is entered. These FLMD0 pulses are generated by the flash
programmer.
The following table shows the relationship between the number of pulses and communication modes.
Table 26-8. Communication Modes
Standard Setting
Note 1
Communication Mode
Port
Speed
On Target
Frequency
Multiply Rate
Pins Used
Number of
FLMD0
Pulses
UART
(UART6)
UART-ch0
4800 to 76800 bps
Notes 2, 3
TxD6, RxD6
0
3-wire serial I/O
(CSI10)
SIO-ch0
200 kHz to 2 MHz
Note 2
SO10, SI10,
SCK10
8
3-wire serial I/O with
handshake supported
(CSI10 + HS)
SIO-H/S
200 kHz to 2 MHz
Note 2
Optional
2 MHz to
16 MHz
1.0
SO10, SI10,
SCK10,
HS/P15
11
Notes 1. Selection items for Standard settings on Flashpro IV.
2. The possible setting range differs depending on the voltage. For details, refer to the chapters of electrical
specifications.
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 programmer after the FLMD0 pulse has been received.