TMP92CM22 2007-02-16 92CM22-256(2) Points to note
a) AM0 and AM1 pins
This pin is connected to the VCC (Power supply level) or VSS (Ground level) pins. Do not
alter the level when the pin is active.
b) Reservation area of address area
TMP92CM22 don’t include reservation area.
c) Warm-up counter
The warm-up counter operates when STOP mode is released, even if the system is using
an external oscillator. As a result a time equivalent to the warm-up time elapses between
input of the release request and output of the system clock.
d) Watchdog timer
The watchdog timer starts operation immediately after a reset is released. When the
watchdog timer is not to be used, disable it.
e) AD converter
The string resistor between the VREFH and VREFL pins can be cut by a program so as to
reduce power consumption. When STOP mode is used, disable the resistor using the
program before the HALT instruction is executed.
f) CPU (micro DMA)
Only the LDC cr, r and LDC r, cr instructions can be used to access the control registers
in the CPU (e.g., the transfer source address register (DMASn)).
g) Undefined SFR bit
The value of an undefined bit in an SFR (Special function register) is undefined when
read.
h) POP SR instruction
Please execute the POP SR instruction during DI condition.