Z86C04 Datasheet, PDF (17/34 Pages) Zilog, Inc. – CMOS 8-BIT LOW-COST 1K/2K-ROM MICROCONTROLLERS

Zilog
Z86C04/C08
CMOS 8-Bit Low-Cost 1K/2K-ROM Microcontrollers
LOW NOISE VERSION
Low EMI Emission
The Z8^® can be programmed to operate in a Low EMI
s Output drivers have resistances of 200 ohms (typical).
s Oscillator divide-by-two circuitry eliminated.
1
emission mode by means of a mask ROM bit option. Use
of this feature results in:
The Low EMI mode is mask-programmable to be selected
by the customer at the time the ROM code is submitted.a
s All pre-driver slew rates reduced to 10 ns typical.
APPLICATION PRECAUTIONS:
s Internal SCLK/TCLK operation limited to a maximum of
4 MHz - 250 ns cycle time.
1. Emulator does not support the 32KHz operation.
2. For the Z86C04, the WDT only runs in Stop Mode if the
permanent WDT option is selected and if the on-board RC
oscillator is selected as the clock source for the WDT.
3. For the Z86C08, the WDT only runs in Stop Mode if the
permanent WDT option is selected.
4. The registers %FE (GPR) and %FF (SPL) are reset to
00Hex after Stop Mode recovery or any reset.
5. Emulator does not support the system clock driving the
WDT mask option.
DS97DZ80502
PRELIMINARY
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