- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385303 > GMS87C2020K (HYNIX SEMICONDUCTOR INC) HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS PDF資料下載
參數(shù)資料
| 型號(hào)： | GMS87C2020K |
| 廠商： | HYNIX SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP64 |
| 封裝： | SDIP-64 |
| 文件頁數(shù)： | 44/107頁 |
| 文件大?。?/td> | 1482K |
| 代理商： | GMS87C2020K |
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頁當(dāng)前第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
HMS81C2012A/2020A
40
SEP. 2004 Ver 2.00
10. BASIC INTERVAL TIMER
The HMS81C20xxA has one 8-bit Basic Interval Timer
that is free-run, can not stop. Block diagram is shown in
Figure 10-1. In addition, the Basic Interval Timer gener-
ates the time base for watchdog timer counting. It also pro-
vides a Basic interval timer interrupt (BITIF).
The 8-bit Basic interval timer register (BITR) is increased
every internal count pulse which is divided by prescaler.
Since prescaler has divided ratio by 8 to 1024, the count
rate is 1/8 to 1/1024 of the oscillator frequency. As the
count overflows from FF
H
to 00
H
, this overflow causes to
generate the Basic interval timer interrupt. The BITIF is in-
terrupt request flag of Basic interval timer. The Basic In-
terval Timer is controlled by the clock control register
(CKCTLR) shown in Figure 10-2.
When write "1" to bit BTCL of CKCTLR, BITR register is
cleared to "0" and restart to count-up. The bit BTCL be-
comes "0" after one machine cycle by hardware.
If the STOP instruction executed after writing "1" to bit
WAKEUP of CKCTLR, it goes into the wake-up timer
mode. In this mode, all of the block is halted except the os-
cillator, prescaler (only fXIN
÷
2048) and Timer0.
If the STOP instruction executed after writing "1" to bit
RCWDT of CKCTLR, it goes into the internal RC oscillat-
ed watchdog timer mode. In this mode, all of the block is
halted except the internal RC oscillator, Basic Interval
Timer and Watchdog Timer. More detail informations are
explained in Power Saving Function. The bit WDTON de-
cides Watchdog Timer or the normal 7-bit timer.
Source clock can be selected by lower 3 bits of CKCTLR.
BITR and CKCTLR are located at same address, and ad-
dress 0EC
H
is read as a BITR, and written to CKCTLR.
Figure 10-1 Block Diagram of Basic Interval Timer
MUX
Basic Interval
Timer Interrupt
BITR
Select Input clock 3
Basic Interval Timer
clock control register
source
clock
8-bit up-counter
BTS[2:0]
BTCL
÷
1024
÷
512
÷
256
÷
128
÷
64
÷
32
÷
16
÷
8
To Watchdog timer (WDTCK)
CKCTLR
clear
overflow
Internal bus line
[0EC
H
]
[0EC
H
]
BITIF
Read
X
IN
PIN
P
Internal RC OSC
RCWDT
1
0
WAKEUP
STOP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GMS87C2020LQ | MEMORY CARD COMPACTFLASH 128MB |
| GMS87C2020Q | HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| GNR60S201JR | Catalog number system |
| GNR40B201J4 | Catalog number system |
| GNR40B201JA | Catalog number system |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GMS87C2020LQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver |
| GMS87C2020Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver |
| GMS87C2120 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| GMS87C2120K | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| GMS87C2120Q | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。