參數(shù)資料
型號: 90S1200
廠商: Atmel Corp.
元件分類: 8位微控制器
英文描述: -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash
中文描述: 位AVR微控制器具有8K字節(jié)的系統(tǒng)內(nèi)可編程閃存
文件頁數(shù): 10/71頁
文件大?。?/td> 1416K
代理商: 90S1200
10
AT90S1200
0838H
AVR
03/02
I/O Memory
The I/O space definition of the AT90S1200 is shown in the following table.
Note:
Reserved and unused locations are not shown in the table.
All AT90S1200 I/Os and peripherals are placed in the I/O space. The different I/O loca-
tions are accessed by the IN and OUT instructions transferring data between the 32
general purpose working registers and the I/O space. I/O registers within the address
range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these
registers, the value of single bits can be checked by using the SBIS and SBIC instruc-
tions. Refer to the instruction set chapter for more details.
For compatibility with future devices, reserved bits should be written to zero if accessed.
Reserved I/O memory addresses should never be written.
Some of the status flags are cleared by writing a logical one to them. Note that the CBI
and SBI instructions will operate on all bits in the I/O register, writing a one back into any
flag read as set, thus clearing the flag. The CBI and SBI instructions work with registers
$00 to $1F only.
The different I/O and peripherals control registers are explained in the following
sections.
Table 1.
The AT90S1200 I/O Space
Address Hex
Name
Function
$3F
SREG
Status REGister
$3B
GIMSK
General Interrupt MaSK register
$39
TIMSK
Timer/Counter Interrupt MaSK register
$38
TIFR
Timer/Counter Interrupt Flag register
$35
MCUCR
MCU general Control Register
$33
TCCR0
Timer/Counter0 Control Register
$32
TCNT0
Timer/Counter0 (8-bit)
$21
WDTCR
Watchdog Timer Control Register
$1E
EEAR
EEPROM Address Register
$1D
EEDR
EEPROM Data Register
$1C
EECR
EEPROM Control Register
$18
PORTB
Data Register, Port B
$17
DDRB
Data Direction Register, Port B
$16
PINB
Input Pins, Port B
$12
PORTD
Data Register, Port D
$11
DDRD
Data Direction Register, Port D
$10
PIND
Input Pins, Port D
$08
ACSR
Analog Comparator Control and Status Register
相關(guān)PDF資料
PDF描述
90S2313 -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash
90S2343 -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash
90S4414 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
90S8535 -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash
90SCFM 20SCFM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
90S2313 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 2K bytes In-System Programmable Flash
90S2343 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 2K Bytes of In-System Programmable Flash
90S4414 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K bytes In-System Programmable Flash
90S7A 制造商:QUARTZCOM 制造商全稱:QUARTZCOM the communications company 功能描述:-20 ~ +70 °C commercia l application -30 ~ +75 °C on request
90S8535 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash