參數(shù)資料
型號: S3P72P9-QX
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, QFP-100
文件頁數(shù): 25/225頁
文件大?。?/td> 1303K
代理商: S3P72P9-QX
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當前第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁第225頁
S3C72P9/P72P9 (Preliminary Spec)
POWER-DOWN
8-1
8
POWER-DOWN
OVERVIEW
The S3C72P9 microcontroller has two power-down modes to reduce power consumption: idle and stop. Idle
mode is initiated by the IDLE instruction and stop mode by the instruction STOP. (Several NOP instructions must
always follow an IDLE or STOP instruction in a program.) In idle mode, the CPU clock stops while peripherals
and the oscillation source continue to operate normally.
When
RESET occurs during normal operation or during a power-down mode, a reset operation is initiated and
the CPU enters idle mode. When the standard oscillation stabilization time interval (31.3 ms at 4.19 MHz) has
elapsed, normal CPU operation resumes.
In stop mode, main system clock oscillation is halted (assuming it is currently operating), and peripheral hard-
ware components are powered-down. The effect of stop mode on specific peripheral hardware components —
CPU, basic timer, serial I/O, timer/ counters 0 and 1, watch timer, and LCD controller — and on external interrupt
requests, is detailed in Table 8–1.
Idle or stop modes are terminated either by a
RESET, or by an interrupt which is enabled by the corresponding
interrupt enable flag, IEx. When power-down mode is terminated by
RESET, a normal reset operation is
executed. Assuming that both the interrupt enable flag and the interrupt request flag are set to "1", power-down
mode is released immediately upon entering power-down mode.
When an interrupt is used to release power-down mode, the operation differs depending on the value of the
interrupt master enable flag (IME):
— If the IME flag = “0”; If the power down mode release signal is generated, after releasing the power-down
mode, program execution starts immediately under the instruction to enter power down mode without
execution of interrupt service routine. The interrupt request flag remains set to logic one.
— If the IME flag = "1"; If the power down mode release signal is generated, after releasing the power down
mode, two instructions following the instruction to enter power down mode are executed first and the interrupt
service routine is executed, finally program is resumed.
However, when the release signal is caused by INT2 or INTW, the operation is identical to the IME = “0”
condition because INT2 and INTW are a quasi-interrupt.
NOTE
Do not use stop mode if you are using an external clock source because X
IN input must be restricted
internally to V
SS to reduce current leakage.
相關PDF資料
PDF描述
S3P7434-QZ 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP44
S3P7544-SM 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO24
S3C7544XX-AM 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP24
S3P8075XX-AT 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP64
S3P8075XX-QT 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PQFP64
相關代理商/技術參數(shù)
參數(shù)描述
S3P72Q5 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:4?BIT CMOS MICROCONTROLLER USERS MANUAL
S3P7324 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:The S3C7324 single-chip CMOS microcontroller has been designed for high performance using Samsungs newest 4-bit CPU core, SAM47
S3P7335 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:The S3C7335 single-chip CMOS microcontroller has been designed for high performance using Samsungs newest 4-bit CPU core, SAM47
S3P7414 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:The S3C7414/C7424/C7434 single-chip CMOS microcontroller has been designed for very high performance using Samsungs newest 4-bit CPU core, SAM47
S3P7424 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:The S3C7414/C7424/C7434 single-chip CMOS microcontroller has been designed for very high performance using Samsungs newest 4-bit CPU core, SAM47