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| 型号： | ST6246B |
| 英文描述： | 8-BIT MICROCONTROLLER ( MCU ) WITH OTP. ROM. FASTROM. EPROM. LCD DRIVER. EEPROM. A/D CONVERTER AND 56 PINS |
| 中文描述： | 8位微控制器（MCU）的与检察官办公室。光盘。 FASTROM。存储器。液晶显示驱动程序。 EEPROM中。的A / D转换器和56图钉 |
| 文件页数： | 52/74页 |
| 文件大小： | 733K |
| 代理商： | ST6246B |
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ST62T46B/E46B
4.6 POWERSUPPLY SUPERVISOR DEVICE (PSS)
The Power Supply Supervisor device, described in
the
Figure 31
, permits supervising the crossing of
the PSS pin voltage (VPSS) through a program-
mable voltage (mxV
DD
/n), where n and m can be
chosen by software. This device includes:
– An internal comparator which is connected to the
internal INT line to make an interrupt request to
the Core.
– 2 resistive voltage dividers that are, respectively,
supplied by the PSS pin and the V
DD
pin. These
two voltage dividers are both connected to the
two inputs of the internal comparator. They con-
sist of 13 identical resistors. It is possible to se-
lect by software 5 voltage rates on the PSS
divider (nxVPSS/13) and 4 voltage rates on the
V
DD
divider (mxV
DD
/13). The n and m values can
be chosen by software. These two voltage divid-
ers are disconnected in STOP mode, and when
the PSS device is OFF.
– An internal device that allows the detection with
an hysteresis of V
DD
/13.
The PSS device is supplied by an internal connec-
tion to V
DD
supply. The following paragraphs de-
scribe the operating mode of the PSS device and
the PSS register that permits control over the PSS
device. The PSS device is switched off as soon as
the Core executes the STOP instruction, but con-
tinues to work in the WAIT mode.
Figure 30. PSS Device Operating Modes
Description
Figure 31. PSS Device Block Diagram
VPSS
t
(m+1)x/V
DD
/13
mx/V
DD
/13
PIF
1
0
t
nxVPSS/13
VR02044A
PSS
V
DD
PSS ON
INTERRUPT LINE
PIF
2k
(UP to 13 STEPS)
2k
(UP to 13 STEPS)
SEQUENCER
& LOGIC
SYNCHRO
+
-
VA0060
相关PDF资料 |
PDF描述 |
|---|---|
| ST624XB-KIT | STARTER KIT DATASHEET FOR ST624X |
| ST62E40BG1 | 8-BIT MICROCONTROLLER |
| ST62T45BQ6 | 8-BIT MICROCONTROLLER |
| ST6242B | 8-BIT MICROCONTROLLER ( MCU ) WITH OTP. ROM. FASTROM. EPROM. LCD DRIVER. EEPROM. A/D CONVERTER AND 64 PINS |
| ST62E45BG1 | 8-BIT MICROCONTROLLER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ST6246BB1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCU WITH LCD DRIVER, EEPROM AND A/D CONVERTER |
| ST6246BB1/XXX | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| ST6246BB6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCU WITH LCD DRIVER, EEPROM AND A/D CONVERTER |
| ST6246BB6/XXX | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| ST6246B-EMU2 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:REAL TIME EMULATION DEVELOPMENT TOOLS FOR ST6 MCU FAMILY |
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