NuMicro® NUC029LEE/NUC029SEE
32-bit Arm
®
Cortex
®
-M0 Microcontroller
Aug, 2018
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6.4.6 Register Description
ISP Control Register (ISPCON)
Register
Offset
R/W
Description
Reset Value
ISPCON
0x00
R/W
ISP Control Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved
ISPFF
LDUEN
CFGUEN
APUEN
Reserved
BS
ISPEN
Bits
Description
[31:7]
Reserved
Reserved.
[6]
ISPFF
ISP Fail Flag (Write Protect)
This bit is set by hardware when a triggered ISP meets any of the following conditions:
(1) APROM writes to itself if APUEN is set to 0
(2) LDROM writes to itself if LDUEN is set to 0
(3) CONFIG is erased/programmed if CFGUEN is set to 0
(4) Destination address is illegal, such as over an available range
Write 1 to clear to this bit to 0.
[5]
LDUEN
LDROM Update Enable Bit (Write Protect)
0 = LDROM cannot be updated.
1 = LDROM can be updated when chip runs in APROM.
[4]
CFGUEN
Enable Config Update By ISP (Write Protect)
0 = ISP update config-bit Disabled.
1 = ISP update config-bit Enabled.
[3]
APUEN
APROM Update Enable Bit (Write Protect)
0 = APROM cannot be updated when chip runs in APROM.
1 = APROM can be updated when chip runs in APROM.
[2]
Reserved
Reserved.