MC68HC11KW1 Datasheet, PDF (127/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

6.12.2 CONFIG — System configuration register
Configuration control (CONFIG)
Address bit 7
$003F 1
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
1
CLKX
PAREN
NOSEC
NOCO
P
1
EEON 11xx xx1x
Bits [7, 6, 1] — Not implemented; always reads as one.
CLKX — X clock enable (refer to Section 4)
1 (set) – XCLK signal is driven out on the XOUT pin.
0 (clear) – XOUT pin is disabled.
PAREN — Pull-up assignment register enable
1 (set) – Pull-ups can be enabled using PPAR register.
6
0 (clear) – All pull-ups disabled.
NOSEC — EEPROM security disabled (refer to Section 4)
1 (set) – Disable security.
0 (clear) – Enable security.
NOCOP — COP system disable (refer to Section 5)
1 (set) – COP system disabled.
0 (clear) – COP system enabled (forces reset on timeout).
EEON — EEPROM enable (refer to Section 4)
1 (set) – EEPROM is present in the memory map.
0 (clear) – EEPROM is disabled from the memory map.
MC68HC11KW1
PARALLEL INPUT/OUTPUT
6-15