Z86L04 Datasheet, PDF (21/26 Pages) Zilog, Inc. – Z8 8-Bit Cost-Effective Microcontrollers

Zilog
Z86L04/L08
Z8 8-Bit Cost-Effective Microcontrollers
Vcc
(Volts)
3.2
1
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
–40°C –20°C 0°C
20°C
40°C 60°C 80°C 100°C
Temp
Figure 17. Typical Auto Reset Voltage (V_LV) vs. Temperature
OPTIONS
ROM protect, Low Noise, Auto Latch Disable, RC Oscilla-
tor, 32 kHz Crystal and Permanent WDT enable features
as options and must be selected at the time of ROM code
submissions.
ROM Protect. ROM Protect fully protects the Z8 ROM
code from being read externally. When ROM Protect is se-
lected, the instructions LDC and LDCI are supported.
(However, instructions LDE and LDEI are not supported.)
Auto Latch Disable. Auto Latch Disable option when Se-
lected will globally disable all Auto Latches.
RC. RC Oscillator option when selected will allow using a
resistor (R) and a capacitor (C) as a clock source.
WDT Clock Source. This selects the clock source of the
WDT and POR counter chain to be driven by either the in-
ternal system clock or the internal on-board RC oscillator.
(Z86L04 only).
Low EMI. The Low EMI (Low noise) mode by passes the
divide by two clock circuit (SCLK = XTAL/1) and lowers the
output sink and drive currents by 75 percent. The maxi-
mum oscillator frequency at XTAL pins is 1MHz.
WDT Enable. WDT Enable option bit when selected will
have the WDT permanently enabled in all modes and can
not be stopped in HALT or STOP Mode, if the internal RC
oscillator is selected as the clock source. If the system
clock (SCLK) is the clock source, the WDT will be stopped
in STOP mode.
Please note that when using the device in a noisy environ-
ment, it is suggested that the voltages on the EPM and CE
pins be clamped to V_CC through a diode to V_CC to prevent
accidentally entering the OTP mode. The V_PP requires
both a diode and a 100 pF capacitor.
32 kHz Crystal. This disables the internal feedback resis-
tor on the crystal oscillator circuit (not for RC oscillator cir-
cuit) so that a 32 kHz crystal can be connected to the
XTAL1 and XTAL2 pins.
DS97LVO0901
PRELIMINARY
21