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参数资料
| 型号： | ST6393B1 |
| 厂商： | 意法半导体 |
| 英文描述： | 8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| 中文描述： | 8位微控制器HCMOS电视频率合成带OSD |
| 文件页数： | 26/68页 |
| 文件大小： | 560K |
| 代理商： | ST6393B1 |
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RESET
IS RESET
STILL PRESENT
YES
NO
VA000427
NMI MASK SET
INT LATCH CLEARED
( IF PRESENT )
SELECT
NMI MODE FLAGS
PUT FFEh
ON ADDRESS BUS
LOAD PC
FROM RESET LOCATIONS
FFE / FFF
FETCH INSTRUCTION
Figure23. Reset & Interrupt Processing
Flow-Chart
JP
RESET VECTOR
INITIALIZATION
ROUTINE
JP: 2 BYTES/4 CYCLES
RETI: 1BYTES/2 CYCLES
RETI
VA000181
RESET
Figure 24. Restart Initialization Program
Flow-Chart
MCU InitializationSequence
When a reset occurs the stackis reset to program
counter, the PC is loaded with the address of the
reset vector (located in the program ROM at ad-
dresses FFEh & FFFh). A jump instruction to the
beginning of the program has to be written into
these locations. After a reset the interrupt mask is
automatically activated so that the Core is in non-
maskable interrupt mode to prevent false or ghost
interrupts during the restart phase. Therefore the
restart routine should be terminated by a RETIin-
struction to switch to normal mode and enable in-
terrupts. If no pending interrupt is present at the
end of the reset routine, the ST639x will continue
with the instruction after the RETI; otherwise the
pendinginterrupt will beserviced.
RESET Low Power Mode
(ST6392 andST6399 only)
When the reset pin is low, the quartz oscillator is
Disabled allowing reduced current consumption.
When the reset pin is raised the quartzoscillator is
enabled and oscillations will start to build up.The
internal reset circuitrywill count 2048clockson the
oscillator pin beforeallowingthe MCUto go out of
the resetstate;the clocksareafteraschmitt trigger
so thatfalse or multiplecounts arenot possible.
RESET
(Continued)
ST6391,92,93,95,97,99
22/64
相关PDF资料 |
PDF描述 |
|---|---|
| ST6395B1 | 8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| ST6391B1 | MOSFET; Transistor Polarity:Dual N Channel; Continuous Drain Current, Id:2.6A; On-Resistance, Rds(on):0.18ohm; Package/Case:8-SOIC; Leaded Process Compatible:No; Mounting Type:surface mount; Peak Reflow Compatible (260 C):No |
| ST6392 | 8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| ST6393 | 8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| ST6395 | 8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ST6395 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| ST6395B1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| ST6397 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| ST6397B1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
| ST6399 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD |
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