CHAPTER 26 FLASH MEMORY
Preliminary User’s Manual U17260EJ3V1UD
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26.7.3 Selecting communication mode
In the 78K0/KE2, 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 26-7. Communication Modes
Standard Setting
Note 1
Communication
Mode
Port
Speed
On Target
Frequency
Multiply
Rate
Pins Used
Peripheral
Clock
Number of
FLMD0
Pulses
f
X
0
UART
(UART6)
UART-ch0 115200
bps
Note 3
TxD6,
RxD6
f
EXCLK
3
3-wire serial I/O
(CSI10)
SIO-ch0
2.4 kHz to
2.5 MHz
Optional
1 to 20
MHz
Note 2
1.0
SO10, SI10,
SCK10
f
RH
8
Notes 1.
Selection items for Standard settings on FlashPro4.
2.
The possible setting range differs depending on the voltage. For details, refer to the chapter 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.
Remark
f
X
: X1
clock
f
EXCLK
: External main system clock
f
RH
:
Internal high-speed oscillation clock