upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 449

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Address: 0081H/1081H
Address: 0082H/1082H, 0083H/1083H
Address: 0084H/1084H
Notes 1.
Caution For the
Note Be sure to set 00H to 0082H and 0083H, as these addresses are reserved areas. Also set 00H to 1082 and
Note To use the on-chip debug function with a product equipped with the on-chip debug function (
Remark For the on-chip debug security ID, see CHAPTER 20 ON-CHIP DEBUG FUNCTION.
1083H because 0082H and 0083H are switched with 1082H and 1083H when the boot swap operation is
used.
set 02H or 03H to 0084H. Set a value that is the same as that of 0084H to 1084H because 0084H and
1084H are switched at boot swapping.
2.
POCMODE
POCMODE can only be written by using a dedicated flash programmer. It cannot be set during self-
programming or boot swap operation during self-programming (at this time, 1.59 V POC mode (default)
is set). However, because the value of 1081H is copied to 0081H during the boot swap operation, it is
recommended to set a value that is the same as that of 0081H to 1081H when the boot swap function
is used.
To change the setting for the POC mode, set the value to 0081H again after batch erasure (chip
erasure) of the flash memory. The setting cannot be changed after the memory of the specified block
is erased.
OCDEN1
7
0
0
1
7
0
7
0
0
0
1
1
µ
Notes 1, 2
Note
PD78F0730, be sure to set 1 to bit 0, and be sure to clear bits 7 to 1 to 0.
1.59 V POC mode (default)
2.7 V/1.59 V POC mode
OCDEN0
6
0
6
0
6
0
0
1
0
1
Note
Figure 18-1. Format of Option Byte (2/2)
Operation disabled
Setting prohibited
Operation enabled. Does not erase data of the flash memory in case authentication
of the on-chip debug security ID fails.
Operation enabled. Erases data of the flash memory in case authentication of the
on-chip debug security ID fails.
Preliminary User’s Manual U19014EJ1V0UD
CHAPTER 18 OPTION BYTE
5
0
5
0
5
0
4
0
4
0
4
0
POC mode selection
On-chip debug operation control
3
0
3
0
3
0
2
0
2
0
2
0
OCDEN1
1
0
1
0
1
µ
PD78F0730),
POCMODE
OCDEN0
0
0
0
0
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