ISPCON

ISPTRG

DFBA

ISPADR

ISPSTA

ISPDAT

ISPCMD

ISPEN : ISP Enable Control (Write Protect)\nSet this bit to enable ISP function.\n
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

BS : Boot Select (Write Protect)\nSet/clear this bit to select next booting from LDROM/APROM, respectively. This bit also functions as chip booting status flag, which can be used to check where chip booted from. This bit is initiated with the inversed value of CBS in CONFIG0 after any reset is happened except CPU reset (RSTS_CPU is 1) or system reset (RSTS_SYS) is happened.\n
bits : 1 - 1 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

APUEN : APROM Update Enable Control (Write Protect)\n
bits : 3 - 3 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

CFGUEN : CONFIG Update Enable Control (Write Protect)\nWriting this bit to 1 enables software to update CONFIG value by ISP register control procedure regardless of program code is running in APROM or LDROM.\n
bits : 4 - 4 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

LDUEN : LDROM Update Enable Control (Write Protect)\n
bits : 5 - 5 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

ISPFF : ISP Fail Flag (Write Protect)\nThis bit is set by hardware when a triggered ISP meets any of the following conditions:\n(3) User Configuration is erased/programmed when CFGUEN is 0.\n(4) Destination address is illegal, such as over an available range.\nNote: Write 1 to clear this bit to 0.
bits : 6 - 6 (1 bit)
access : read-write

ISPGO : ISP Start Trigger (Write Protect)\nWrite 1 to start ISP operation and this bit will be cleared to 0 by hardware automatically when ISP operation is finished.\n
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

DFBA : Data Flash Base Address\nThis register indicates Data Flash start address. It is a read only register.\nThe Data Flash start address is defined by user. Since on chip flash erase unit is 512 bytes, it is mandatory to keep bit 8-0 as 0.
bits : 0 - 31 (32 bit)
access : read-only

ISPADR : ISP Address\nThe NuMicro Mini51TM series supports word program only. ISPADR[1:0] must be kept 00 for ISP operation.
bits : 0 - 31 (32 bit)
access : read-write

ISPGO : ISP Start Trigger (Read Only)\nWrite 1 to start ISP operation and this bit will be cleared to 0 by hardware automatically when ISP operation is finished.\nNote: This bit is the same with ISPTRG bit 0.
bits : 0 - 0 (1 bit)
access : read-only

Enumeration:

End of enumeration elements list.

CBS : Config Boot Selection (Read Only)\nThis is a mirror of CBS in CONFIG0.
bits : 1 - 2 (2 bit)
access : read-only

ISPFF : ISP Fail Flag (Write Protect)\nThis bit is set by hardware when a triggered ISP meets any of the following conditions:\n(3) User Configuration is erased/programmed when CFGUEN is 0.\n(4) Destination address is illegal, such as over an available range.\nWrite 1 to clear.\nNote: This bit functions the same as ISPCON bit 6.
bits : 6 - 6 (1 bit)
access : read-write

VECMAP : Vector Page Mapping Address (Read Only)\nThe current flash address space 0x0000_0000~0x0000_01FF is mapping to address {VECMAP[11:0], 9'h000} ~ {VECMAP[11:0], 9'h1FF}.
bits : 9 - 20 (12 bit)
access : read-only

ISPDAT : ISP Data\nWrite data to this register before ISP program operation.\nRead data from this register after ISP read operation.
bits : 0 - 31 (32 bit)
access : read-write

ISPCMD : ISP Command \nISP commands are shown below:\n
bits : 0 - 5 (6 bit)
access : read-write

Enumeration:

End of enumeration elements list.