Communication Mode - NEC V850E/Dx3 Preliminary User's Manual

Flash Memory
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If the CSIB interface is used with handshake, the flash programmer's HS signal
is connected to a certain V850 port. The port used as the handshake port is
given in Table 6-2.
Flash memory programming off-board requires a dedicated program adapter.
UARTA0, CSIB0 or N-Wire is used as the interface between the flash
programmer and the microcontroller. Flash memory programming off-board
requires a dedicated program adapter (FA series).

6.4.2 Communication mode

The communication between the flash programmer and the microcontroller
utilizes the Asynchronous Serial Interface UARTA0 or optionally the
synchronous serial interface CSIB0.
For programming via the synchronous serial interface CSIB0 without
handshake and with handshake modes are supported. In the latter mode the
port pin P84 is used for the programmer's handshake signal HS.
(1) UARTA0
Transfer rate: 4.800 to 153.600 bps
FLMD0 (FLMD1
Axxxx
Bxxxxx
GND
Cxxxxxx
STATVE
PG-FP4
RESET
RXD
flash programmer
TXD
Note: FLMD1 connection may be replaced by a pull-down resistor on the board
Figure 6-7 Communication with flash programmer via UARTA0
Preliminary User's Manual U17566EE1V2UM00
Note ) FLMD0 (FLMD1
V V
DD DD
V
SS
RESET
TXDA0
RXDA0
Chapter 6
Note
)
V850
microcontroller
239