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CHAPTER 16 FLASH MEMORY ( µ µ µ µ PD70F3017 AND 70F3017Y ONLY)
7.8 V
V
3 V
PP
0 V
RESET
16.6.3 Selection of communication mode
In the V850/SA1, a communication system is selected by inputting pulse (16 pulses max.) to V
switching to the flash memory programming mode. The V
The following shows the relation between the number of pulses and the communication systems.
V
Pulse
Communication System
PP
0
8
Others
Caution
When UART is selected, the receive clock is calculated based on the reset command sent from
the dedicated flash writer after receiving V
16.6.4 Communication command
The V850/SA1 communicates with the dedicated flash writer by means of commands. The command sent from
the dedicated flash writer to the V850/SA1 is called a "command". The response signal sent from the V850/SA1 to
the dedicated flash writer is called a "response command".
Dedicated flash writer
366
V
PP
0 V
Normal operation mode
7.8 V
Flash memory programming mode
Table 16-1. List of Communication Systems
CSI0
V850/SA1 performs slave operation, MSB first
UART0
Communication rate: 9600 bps (at reset), LSB first
RFU
Setting prohibited
Operation Mode
Flash memory programming mode
1
pulse is generated by the dedicated flash writer.
PP
Remarks
pulse.
PP
Command
Response command
V850/SA1
... ... ... ...
2
n
pin after
PP
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