HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 596

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

8. Regarding 12 V application to the V
Notes: 1. Mode pin input must satisfy the mode programming setup time (t
18.6.2 User Program Mode
When set to user program mode, the H8/3048F can erase and program its flash memory by
executing a user program. On-board updates of the on-chip flash memory can be carried out by
providing on-board circuits for supplying V
the program area.
To select user program mode, select a mode that enables the on-chip ROM (mode 5, 6, or 7) and
apply 12 V to the V
would in mode 5, 6, or 7, except for the flash memory. A watchdog timer overflow, however,
cannot output a reset signal while 12 V is applied to V
enable bit (RSTOE) should not be set to 1.
exceed the maximum rating of 13 V. Also, be sure to connect bypass capacitors to the Vpp
and MD
2. For notes on applying and cutting V
the reset release timing. When 12 V is applied to or disconnected from the MD
delay occurs in the fall and rise waveforms due to the influence of the pull-up/pull-
down resistor connected to the MD
delay must be confirmed with the actual waveform on the board.
and Erasing Flash Memory.”
2
pins*
1
PP
.
pin. In this mode, the on-chip peripheral modules operate as they normally
PP
and MD
PP
and data, and storing an update program in part of
2
PP
587
pin, etc. For reset release timing, therefore, this
, refer to 18.10, section (4) of “Programming
2
pins, insure that peak overshoot does not
PP
. The watchdog timer’s reset output
MDS
) with respect to
2
pin, a