Zilog EZ80F91 - Manual (Page 40)

eZ80F91 Development Kit
User Manual
UM014220-0508 eZ80 Development Kit
35
Jumper J7
The J7 jumper connection controls Flash boot loader programming. When
the shunt is placed, overwriting of the Flash boot loader program is
enabled. See
Table 18 .
Jumper J11
The J11 jumper connection controls access to the off-chip Flash memory
device. When the shunt is placed, access to this Flash device is enabled.
See
Table 19 .
Table 17. J3—DIS_EM
Shunt
Status
Function Affected Device
IN Application Module
Hardware Disabled Communication with 7 x 5 LED and Port emulation circuit
is disabled.
OUT Application Module
Hardware Enabled Communication with 7 x 5 LED and Port A emulation circuit
is enabled.
Table 18. J7—FlashWE (Off-Chip)*
Shunt
Status
Function Affected Device
OUT The Flash boot sector of the eZ80F91
Module is write-protected. Flash boot sector of the eZ80F91
Module.
IN The Flash boot sector of the eZ80F91
Module is enabled for writing or
overwriting. Flash boot sector of the eZ80F91
Module.
Note: As shipped from the factory, external Flash memory is not installed.