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14.1.2 Communication mode
Use the communication mode shown in Table 14-2 to perform communication between the dedicated flash
programmer and µ PD78F9801.
Communication
Mode
COMM PORT
3-wire serial
SIO ch-0
I/O
(3-wire, sync.)
Pseudo-3-wire Port A
(pseudo-
3-wire)
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 16
ELECTRICAL SPECIFICATIONS.
10 V
V
V
PP
DD
V
SS
V
DD
RESET
V
SS
192
CHAPTER 14
Table 14-2. Communication Mode List
Note 1
TYPE Setting
SIO Clock
CPU Clock
100 Hz to
Optional
Note 2
1.25 MHz
100 Hz to
Optional
1 kHz
Figure 14-2. Communication Mode Selection Format
User's Manual U12978EJ3V0UD
µ µ µ µ PD78F9801
Flash Clock
Multiple Rate
Note 2
1 to 5 MHz
1.0
Note 2
1 to 5 MHz
1.0
1
2
V
pulses
PP
Pins Used
Number of
V
Pulses
PP
SI10/P22
0
SO10/P21
SCK10/P20
P10 (serial clock input)
12
P11 (serial data output)
P12 (serial data input)
n
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