MC68HC908GT16 Datasheet, PDF (187/412 Pages) Motorola, Inc – Microcontrollers

FLASH Memory
Wait Mode
Address: ICGTR5, $FF80 and ICGTR3, $FF81
Bit 7
6
5
4
3
2
1
Bit 0
Read:
TRIM7
Write:
TRIM6
TRIM5
TRIM4
TRIM3
TRIM2
TRIM1
TRIM0
Reset: U
U
U
U
U
U
U
U
U = Unaffected by reset. Initial value from factory is 1.
Write to this register is by a programming sequence to the FLASH memory.
Figure 11-5. ICG User Trim Registers (ICGTR5 and ICGTR3)
TRIM[7:0] — ICG Trim Factor Bits
These bits are copied by the monitor ROM program following a reset,
if monitor mode was entered while clocking from the ICG and may be
copied by the user’s initialization code to the ICG trim register
(ICGTR).
11.9 Wait Mode
Putting the MCU into wait mode while the FLASH is in read mode does
not affect the operation of the FLASH memory directly, but there will not
be any memory activity since the CPU is inactive.
The WAIT instruction should not be executed while performing a
program or erase operation on the FLASH, otherwise the operation will
discontinue, and the FLASH will be on standby mode.
11.10 Stop Mode
Putting the MCU into stop mode while the FLASH is in read mode does
not affect the operation of the FLASH memory directly, but there will not
be any memory activity since the CPU is inactive.
The STOP instruction should not be executed while performing a
program or erase operation on the FLASH, otherwise the operation will
discontinue, and the FLASH will be on standby mode
NOTE:
Standby mode is the power saving mode of the FLASH module in which
all internal control signals to the FLASH are inactive and the current
consumption of the FLASH is at a minimum.
MC68HC908GT16 • MC68HC908GT8 — Rev. 2
MOTOROLA
FLASH Memory
Technical Data
187