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Chapter 21
Flash Memory
User’s Manual U16702EE3V2UD00
21.8.3 Selection of communication mode
In the V850E/RS1, the communication mode is selected by inputting pulses (12 pulses max.) to the
FLMD0 pin after switching to the flash memory programming mode. The FLMD0 pulse is generated by
the dedicated flash programmer.
The following shows the relationship between the number of pulses and the communication mode.
Caution:
When UARTA is selected, the receive clock is calculated based on the reset com-
mand sent from the dedicated flash programmer after reception of the FLMD0 pulse.
21.8.4 Communication
command
The V850E/RS1 communicates with the dedicated flash programmer via commands. The commands
sent by the dedicated flash programmer to the V850ES/FG2 are called commands, and the response
signals sent by the V850E/RS1 to the flash programmer are called response commands.
Figure 21-14:
Communication Command
The following table lists the flash memory control commands of the V850E/RS1. All these commands
are issued by the programmer, and the V850E/RS1 performs the corresponding processing.
Table 21-4:
List of Communication Modes
FLMD0 Pulse
Communication Mode
Remarks
8
CSIB0
V850E/RS1 operates as slave, MSB first
11
CSIB0 + HS
V850E/RS1 operates as slave, MSB first
0
UARTA0
Communication rate: 9,600 bps (after reset), LSB first
Others
RFU
Setting prohibited
Dedicated flash programmer
Command
Response command
V850E/RS1
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