Z86E72 View Datasheet(PDF) - Zilog
Part Name
Description
MFG CO.
'Z86E72' PDF : 74 Pages View PDF
Z86E72/E73
OTP IR Microcontrollers
Low Voltage Protection. An on-board Voltage Compara- Note: The RC oscillator Xtal1/2 option is invoked during
tor checks that VCC is at the required level to ensure cor- OTP programming as a user-selectable item.
rect operation of the device. Reset is globally driven if VCC
is below VLV (Low Voltage). The minimum operating volt-
The Low Voltage trip voltage (VLV) is less than 3.0V under
1
age varies with the temperature and operating frequency, the following conditions:
while VLV varies with temperature only.
Maximum (VLV) Conditions:
Software Selectable Options. There are four Software
Selectable Options to choose from which corresponds to
the ROM based parts mask options. Register (F0) EH OTP
TA = 0°C, +70°C Internal clock frequency equal to or less
than 8.0 MHz
byte is where these options are controlled; these options
are:
Note: The internal clock frequency is one-half the external
clock frequency.
Bit Name
Port 0 Pull-ups (lower nibble)
Port 0 Pull-ups (upper nibble)
Port 2 Pull-ups
Mouse/Normal
Reg(0F)EH
On/Off
On/Off
On/Off
M/N
The device functions normally above 3.0V under all condi-
tions. The minimum functionality point below 3V is to be
defined. The VLV is a function of temperature and process
parameters.
VLV
T
B
D
0
15
25
35
45
55
Temperature
Figure 45. Typical Z86E7X Low Voltage
vs Temperature at 8 MHz
DS96LVO1100
PRELIMINARY
1-55
Share Link: 
