Flash Memory Programming Mode; Flash Memory Programming Mode; Selecting Communication Mode - NEC 78K0 User Manual

28.7.2 Flash memory programming mode

To rewrite the contents of the flash memory by using the dedicated flash programmer, set the
flash memory programming mode. To set the mode, set the V
Change the mode by using a jumper when writing the flash memory on-board.
10.0 V
V V
PP DD
V
SS
RESET
10.0 V

28.7.3 Selecting communication mode

µ
In the PD78F0148 a communication mode is selected by inputting pulses (up to 11 pulses) to the V
dedicated flash memory programming mode is entered. These V
The following table shows the relationship between the number of pulses and communication modes.
Communication Mode
Port
(COMM PORT)
3-wire serial I/O SIO-ch0
(CSI10) (SIO ch-0)
3-wire serial I/O with SIO-H/S
handshake supported (SIO ch-3
(CSI10 + HS) + handshake)
UART UART-ch0
(UART0) (UART ch-0)
UART UART-ch1
(UART6) (UART ch-1)
UART with UART-ch3
handshake supported (UART ch-3)
(UART0 + HS)
Notes 1. Selection items for Standard settings on Flashpro IV (TYPE settings on Flashpro III).
2. The possible setting range differs depending on the voltage. For details, refer to the chapters of 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.
Caution When UART0 or UART6 is selected, the receive clock is calculated based on the reset command
sent from the dedicated flash programmer after the V
Remark Items enclosed in parentheses in the setting item column are the set value and set item when they differ
from those of Flashpro IV.
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CHAPTER 28
Figure 28-19. Flash Memory Programming Mode
V
PP
V Normal operation mode
SS

Flash memory programming mode

Table 28-7. Communication Modes
Standard (TYPE) Setting
Speed
(SIO CLOCK)
Note 2
200 k to 2 MHz Optional
Note 2
200 k to 2 MHz
Notes 2, 3
4800 to 38400 bps
Notes 2, 3
4800 to 76800 bps
Notes 2, 3
4800 to 38400 bps
User's Manual U15947EJ2V0UD
µ
PD78F0148
pin and clear the reset signal.
PP
1
Flash memory programming mode
Operation mode
pulses are generated by the flash programmer.
PP
*
Note 1
On Target Frequency
(CPU CLOCK) (Flashpro Clock)
2 M to 10 MHz
pulse has been received.
PP
µ
PD78F0148 in the
V pulse
PP
2 • • • n
pin after the
PP
Pins Used
Multiply Rate
(Multiple Rate)
1.0 SO10, SI10, 0
SCK10
SO10, SI10, 3
SCK10,
HS/P15
TxD0, RxD0 8
TxD6, RxD6 9
TxD0, RxD0, 11
HS/P15
Number
of V
PP
Pulses