upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 411

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

16.6.3 Selection of communication mode
switching to the flash memory programming mode. The V
16.6.4 Communication command
from the dedicated flash programmer to the V850/SA1 is called a “command”. The response signal sent from the
V850/SA1 to the dedicated flash programmer is called a “response command”.
In the V850/SA1, the communication mode is selected by inputting a pulse (16 pulses max.) to V
The following shows the relationship between the number of pulses and the communication mode.
Caution
The V850/SA1 communicates with the dedicated flash programmer by means of commands. The command sent
V
V
RESET
PP
PP
7.8 V
Other
Pulse
0
3
8
3 V
0 V
When UART0 is selected, the receive clock is calculated based on the reset command sent from
the dedicated flash programmer after receiving the V
Dedicated flash programmer
Communication Mode
7.8 V
CSI0 + HS
V
0 V
Figure 16-12. Flash Memory Programming Mode
UART0
Cxxxxxx
PP
Axxxx
Bxxxxx
CSI0
RFU
PG-FP4
Table 16-5. List of Communication Modes
Figure 16-13. Communication Command
STATVE
Normal operation mode
Flash memory programming mode
CHAPTER 16 FLASH MEMORY
User’s Manual U12768EJ4V1UD
V850/SA1 performs slave operation, MSB first
V850/SA1 performs slave operation, MSB first
Communication rate: 9600 bps (at reset), LSB first
Setting prohibited
Response command
Command
PP
Operation Mode
pulse is generated by the dedicated flash programmer.
Flash memory programming mode
PP
pulse.
1
Remarks
V850/SA1
2
…
n
PP
pin after
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