Communication Mode - NEC PD789860 User Manual

17.1.2 Communication mode

Use the communication mode shown in Table 17-2 to perform communication between the dedicated flash
µ
programmer and PD78E9860A, 78E9861A.
Communication
Mode
COMM
PORT
Pseudo 3-wire Port A
(Pseudo-
3 wire)
Notes 1. Selection items for TYPE settings on the dedicated flash programmer (Flashpro III / Flashpro IV).
2. Be sure to use In Flashpro (system clock is supplied from a dedicated flash writer) with the
µ
PD78E9861A.
3. The possible setting range differs depending on the voltage.
ELECTRICAL SPECIFICATIONS.
4. 2 or 4 MHz only with Flashpro III
10 V
V V
PP DD
V
SS
V
DD
RESET
V
SS
µ
CHAPTER 17 PD78E9860A, 78E9861A
Table 17-2. Communication Mode List
Note 1
TYPE Setting
SIO Clock CPU CLOCK
In Flashpro On Target Board
100 Hz to 1, 2, 4, 5
Notes 3, 4
1 kHz MHz
Figure 17-2. Communication Mode Selection Format
User's Manual U14826EJ5V0UD
Note 2
Multiple
Rate
Note 3
1 to 5 MHz 1.0
1 2
V
PP
Pins Used Number of
V
PP
P02 (serial data input) 12
P01 (serial data output)
P00 (serial clock input)
For details, see CHAPTER 20
n
pulse
Pulses
161