z8pe003 ZiLOG Semiconductor, z8pe003 Datasheet - Page 23

• Manufacturer Part Number: z8pe003
• Description: Feature-enhanced Z8plus 1k Rom One-time Programmable Otp Microcontroller
• Manufacturer: ZiLOG Semiconductor

ZiLOG
STOP MODE OPERATION
The
by current. This instruction turns off the on-chip oscillator
and internal system clock.
To enter the
instruction. It is not necessary to execute a
immediately before the
The
POR
the processor always restarts the application program at ad-
dress
STOP
STOP
Note: Failure to clear the
DS008700-Z8X0799
STOP
STOP
or a Stop-Mode Recovery source. At reset generation,
6F
0020H
mode flag does not clear it. The user must clear the
mode flag with software.
fined behavior.
mode is exited by any one of the following resets:
mode provides the lowest possible device stand-
STOP
STOP
, and the
mode, the Z8Plus only requires a
;enter STOP mode
STOP
STOP
STOP
mode flag is set. Reading the
instruction.
mode flag can result in unde-
NOP
instruction
P R E L I M I N A R Y
STOP
The Z8Plus provides a dedicated Stop-Mode Recovery
(
PB0
pin
tion selected before the
level on
T
POR
Notes: 1. The
SMR
WSM
PB0
(I/O Port B, bit 0) triggers an
delay.
) circuit. In this case, a low-level applied to input pin
. Program execution starts at address
2. For detailed information about flag settings, see the
Z8Plus User’s Manual
does not initialize the control registers.
The
•
• Output current sourcing is minimized
• All inputs (digital and analog) are at the Low or High
must be configured as an input and the special func-
PB0
V
rail voltages
STOP
CC
PB0
must be held for a minimum pulse width
is at the low end of the device’s operating range
mode current (
input, when used for Stop-Mode Recovery,
STOP
Z8Plus OTP Microcontroller
.
I
mode is entered. The Low
CC2
SMR
) is minimized when:
. To use this mode,
20h
, after the
Z8PE002
23