Samsung KS57C2308 Manual page 207

KS57C2308/P2308/C2316/P2316
9
RESET
OVERVIEW
When a signal is input during normal operation or power-down mode, a hardware reset operation is
RESET
initiated and the CPU enters idle mode. Then, when the standard oscillation stabilization interval of 31.3 ms at
4.19 MHz has elapsed, normal system operation resumes.
Regardless of when the
hardware register values are set to the reset values described in Table 9-1. The current status of several register
values is, however, always retained when a
normal operating mode, their values are undefined. Current values that are retained in this case are as follows:
— Carry flag
— Data memory values
— General-purpose registers E, A, L, H, X, W, Z, and Y
RESET
INPUT
NORMAL MODE
OR
POWER-DOWN
MODE
occurs — during normal operating mode or during a power-down mode — most
RESET
RESET
RESET OPERATION
Figure 9-1. Timing for Oscillation Stabilization After
occurs during idle or stop mode; If a
OSCILLATION
STABILIZATION
(31.3 ms / 4.19 MHz)
IDLE MODE
occurs during
RESET
OPERATING MODE
RESET
RESET
9-1