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19.1.2 Communication mode
Use the communication mode shown in Table 19-2 to perform communication between the dedicated flash
µ
programmer and
PD78F9488 or 78F9489.
Communication
Mode
COMM
PORT
3-wire serial I/O
SIO ch-0
(3-wired,
sync.)
3-wire serial I/O
SIO ch-3
with handshake
+ handshake
UART
UART ch-0
(Async.)
Notes 1. Selection items for TYPE settings on the dedicated flash programmer (Flashpro III (part no. FL-PR3,
PG-FP3)/Flashpro IV (part no. FL-PR4, PG-FP4)).
2. The possible setting range differs depending on the voltage. For details, refer to CHAPTER 22
ELECTRICAL SPECIFICATIONS (
3. Only 2 MHz or 4 MHz can be selected for Flashpro III.
4. Because signal wave slew also affects UART communication, in addition to the baud rate error,
thoroughly evaluate the slew.
5. Flashpro IV only. However, when using Flashpro III, be sure to select the clock of the resonator on the
board. UART cannot be used with the clock supplied by Flashpro III.
10 V
V
V
PP
DD
V
SS
V
DD
RESET
V
SS
CHAPTER 19 FLASH MEMORY VERSION
Table 19-2. Communication Mode List
Note 1
TYPE Setting
SIO Clock
CPU Clock
In Flashpro
100 Hz to
1, 2, 4, 5
Note 3
1.25
MHz
Note 2
MHz
Note 5
4,800 to
5 MHz
76,800 bps
Notes 2, 4
µ
PD789488, 78F9488, 789489, 78F9489).
Figure 19-2. Communication Mode Selection Format
User's Manual U15331EJ4V1UD
Multiple
Rate
On Target Board
Note
1 to 5 MHz
1.0
2
4.91 or
1.0
Note 2
5 MHz
1
2
V
pulses
PP
Pins Used
Number of V
Pulses
SI20/RxD20/P22
0
SO20/TxD20/P21
SCK20/ASCK20/
P20
3
SI20/RxD20/P22
SO20/TxD20/P21
SCK20/ASCK20/
P20
P11 (HS)
RxD20/SI20/P22
8
TxD20/SO20/P21
n
PP
321
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