
410
μPD780948, μPD78F0948, μPD780949, μPD78F0949
Figure 25-5: Flashpro Connection Using UART Method
Figure 25-6: Flashpro Connection Using Pseudo 3-wire Serial I/O
V
PP
:
RESET:
System clock: The CPU clock for the device may be supplied by the on-board program tool. Altenatively
the crystal or ceramic oscillator on the target H/W can be used in the on-board programming
mode. The external system clock has to be connected with the X1 pin on the device.
V
DD
:
The power supply for the device may be supplied by the on-board program tool. Alternatively
the power supply on the target H/W can be used in the on-board programming mode.
GND:
Ground level V
SS
.
SCK/PSCK:
Serial clock generated by the on-board programming tool.
SI/PSI:
Serial data sent by the on-board programming tool.
SO/PSO:
Serial data sent by the device.
R
X
D:
Serial data sent by the on-board programming tool.
T
X
D:
Serial data sent by the device.
10.3 V applied from the o-board programming tool.
A RESET is generated and the device is set to the on-board programming mode.
25.3.5 Flash programming precautions
Please make sure that the signals used by the on-board programming tool do not conflict with other
devices on the target H/W.
A read functionality is not supported because of software protection. Only a verify operation of the
whole Flash EPROM is supported. In verify mode data from start address to final address (EFFFH)
has to be supplied by the programming tool. The device compares each data with on-chip flash content
and replies with a signal for O.K. or not O.K.
V
PP
V
DD
RESET
SO
SI
GND
V
PP
V
DD
RESET
RXD0
TXD0
V
SS
Flashpro
μPD
78F0948/
μPD
78F0949
V
PP
V
DD
RESET
SCK
SO
SI
GND
V
PP
V
DD
RESET
(Serial clock input)
(Serial data input)
(Serial data output)
V
SS
Flashpro
μPD
78F0948/
μPD
78F0949