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參數(shù)資料
| 型號(hào)： | STM6322ZWY6F |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5-Pin Supervisor with Watchdog Timer and Push-button Reset |
| 中文描述： | 5引腳監(jiān)控，帶有看門狗定時(shí)器和按鈕復(fù)位 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 315K |
| 代理商： | STM6322ZWY6F |
5/21
STM6321/6322/6821/6822/6823/6824/6825
Pin Descriptions
Active-Low, Push-pull Reset Output (RST) -
STM6822/6823/6824/6825.
Pulses low when trig-
gered, and stays low whenever V
CC
is below the
reset threshold or when MR is a logic low. It re-
mains low for t
rec
after either V
CC
rises above the
reset threshold, the watchdog triggers a reset, or
MR goes from low to high.
Active-Low, Open Drain Reset Output (RST) -
STM6321/6322/6822.
Pulses low when triggered,
and stays low whenever V
CC
is below the reset
threshold or when MR is a logic low. It remains low
for t
rec
after either V
CC
rises above the reset
threshold, the watchdog triggers a reset, or MR
goes from low to high. Connect a pull-up resistor
to supply voltage.
Push-button Reset Input (MR).
A logic low on
MR asserts the reset output. Reset remains as-
serted as long as MR is low and for t
rec
after MR
returns high. This active-low input has an internal
52k
pull-up. It can be driven from a TTL or CMOS
logic line, or shorted to ground with a switch.
Leave open if unused.
Watchdog Input (WDI).
If WDI remains high or
low for at least 1.6sec, the internal watchdog timer
expires and reset is asserted. The internal watch-
dog timer clears while reset is asserted or when
WDI sees a rising or falling edge. The watchdog
function
CAN
be disabled if WDI is left unconnect-
ed or is connected to a tri-state buffer output.
Active-High Reset Output.
Active-high,
pull reset output; inverse of RST.
push-
Table 3. Pin Functions
Figure 6. Block Diagram (STM6xxx)
Note: 1. For STM6321/6821/6822/6823/6824
2. For STM6322/6821/6822/6823/6825
3. For STM6821/ (RST output only)
4. For STM6321/6322/6824/6825 (both RST and RST outputs)
Pin
Name
Function
STM6822
STM6823
STM6821
STM6321
STM6824
STM6322
STM6825
1
–
1
1
RST
Active-Low Reset Output
3
3
–
4
MR
Push-button Reset Input
4
4
4
–
WDI
Watchdog Input
–
1
3
3
RST
Active-High Reset Output
5
5
5
5
V
CC
Supply Voltage
2
2
2
2
V
SS
Ground
AI09132
V
RST
RST (RST)
(3)
WATCHDOG
TIMER
WDI
Transitional
Detector
COMPARE
t
Generator
V
CC
WDI
(1)
MR
(2)
RST
(4)
V
CC
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