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參數(shù)資料
| 型號(hào)： | Z86L70 |
| 廠(chǎng)商： | ZiLOG, Inc. |
| 英文描述： | IR/Low-Voltage Microcontroller |
| 中文描述： | 紅外/低電壓微控制器 |
| 文件頁(yè)數(shù)： | 50/61頁(yè) |
| 文件大?。?/td> | 349K |
| 代理商： | Z86L70 |
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Z86L70/71/75/C71
IR/Low-Voltage Microcontroller
Zilog
1-50
P R E L I M I N A R Y
DS97LVO0500
FUNCTIONAL DESCRIPTION
(Continued)
Low Voltage Detection/Protection.
An on-chip Voltage
Comparator checks that the V
CC
is at the required level for
correct operation of the device. Reset is globally driven
when V
CC
falls below V
LV
(Vrf1).
Mask Selectable Options.
There are six Mask Selectable
Options to choose from based on ROM code require-
ments.
Note:
Internal Port 0/Pull-Up resistors remain connected
when port pins are configured as outputs.
The Low Voltage trip voltage (V
LV
) is less than 2.1V under
the following conditions:
Maximum (V
LV
) Conditions:
T
A
= 0
°
C, +55
°
C Internal clock frequency equal to or less
than 4.0 MHz
Note:
The internal clock frequency is one-half the external
clock frequency.
The device is guaranteed to function normally until the Low
Voltage Protection trip point V
LV
is reached, below which
reset is globally driven. The device is guaranteed to func-
tion normally at supply voltages above the V
LV
trip point for
the temperatures and operating frequencies in maximum
V
LV
conditions. The actual V
LV
trip point is a function of
temperature and process parameters (Figure 39).
Permanent Watch-Dog
Timer
RAM Protect
ROM Protect
32 kHz XTAL
Port 00-07 Pull-ups
Port 31-33 Pull-ups
Port 20-27 Pull-ups
On/WDT command invoked
On/Off
On/Off
On/Off
On/Off
On/Off
On/Off
Figure 39. Typical Z86L7X Low Voltage vs
Temperature at 8 MHz
0
15
25
35
45
55
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
V
VLV
Temperature
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