
351
CHAPTER 22
μ
PD78F0338
User
’
s Manual U14701EJ3V0UD
22.3.2 Communication mode
Use the communication mode shown in Table 22-3 to perform communication between the dedicated flash
programmer and
μ
PD78F0338.
Table 22-3. Communication Mode List
Communication
Mode
TYPE Setting
Note 1
Pins used
Number of V
PP
COMM PORT
SIO Clock
CPU CLOCK
Flash Clock
Multiple Rate
Pulses
3-wire serial I/O
(SIO3)
SIO ch-0
(3-wire, sync) 1.25 MHz
Optional
1 to 10 MHz
Note 2
1.0
SI3/R
X
D0/P20 0
SO3/T
X
D0/P21
SCK3/P22
Note 2
3-wire serial I/O
(CSI1)
SIO ch-1
(3-wire, sync) MHz
Note 2
100 Hz to 2
Optional
1 to 10 MHz
Note 2
1.0
SI1/P23
SO1/P24
SCK1/P25
1
UART
(UART0)
UART ch-0
4,800 to
76,800 bps
Notes 2, 3
Optional
1 to 10 MHz
Note 2
1.0
RxD0/SI3/P20 8
TxD0/SO3/P21
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 24
ELECTRICAL SPECIFICATIONS
.
3.
Because factors other than the baud rate error, such as the signal waveform slew, also affect UART
communication, thoroughly evaluate the slew as well as the baud rate error.
Figure 22-4. 3-Wire Serial I/O (SIO3)
Dedicated flash programmer
VPP1
VDD
RESET
SCK
SO
SI
CLK
GND
V
PP
V
DD0, 1
/AV
REF0, 1
RESET
SCK3
SI3
SO3
X1
V
SS0, 1
/AV
SS0
PD78F0338
Figure 22-5. 3-Wire Serial I/O (CSI1)
Dedicated flash programmer
VPP1
VDD
RESET
SCK
SO
SI
CLK
GND
V
PP
V
DD0, 1
/AV
REF0, 1
RESET
SCK1
SI1
SO1
X1
V
SS0, 1
/AV
SS0
PD78F0338