AT90S1200 Ver la hoja de datos (PDF) - Atmel Corporation
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AT90S1200 Datasheet PDF : 71 Pages
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AT90S1200 Register Summary
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
$3F
$3E
$3D
$3C
$3B
$3A
$39
$38
$37
$36
$35
$34
$33
$32
$31
$30
$2F
$2E
$2D
$2C
$2B
$2A
$29
$28
$27
$26
$25
$24
$23
$22
$21
$20
$1F
$1E
$1D
$1C
$1B
$1A
$19
$18
$17
$16
$15
$14
$13
$12
$11
$10
$0F
...
$09
$08
…
$00
Notes: 1.
2.
SREG
I
T
H
S
V
N
Z
C
page 11
Reserved
Reserved
Reserved
GIMSK
-
INT0
-
-
-
-
-
-
page 15
Reserved
TIMSK
-
-
-
-
-
-
TOIE0
-
page 16
TIFR
-
-
-
-
-
-
TOV0
-
page 16
Reserved
Reserved
MCUCR
-
-
SE
SM
-
-
ISC01
ISC00
page 18
Reserved
TCCR0
-
-
-
-
-
CS02
CS01
CS00
page 21
TCNT0
Timer/Counter0 (8 Bits)
page 22
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
WDTCR
-
-
-
-
WDE
WDP2
WDP1
WDP0
page 23
Reserved
Reserved
EEAR
-
EEPROM Address Register
page 25
EEDR
EEPROM Data Register
page 25
EECR
-
-
-
-
-
-
EEWE
EERE
page 25
Reserved
Reserved
Reserved
PORTB
PORTB7
PORTB6
PORTB5
PORTB4
PORTB3
PORTB2
PORTB1
PORTB0
page 29
DDRB
DDB7
DDB6
DDB5
DDB4
DDB3
DDB2
DDB1
DDB0
page 29
PINB
PINB7
PINB6
PINB5
PINB4
PINB3
PINB2
PINB1
PINB0
page 29
Reserved
Reserved
Reserved
PORTD
-
PORTD6
PORTD5
PORTD4
PORTD3
PORTD2
PORTD1
PORTD0
page 34
DDRD
-
DDD6
DDD5
DDD4
DDD3
DDD2
DDD1
DDD0
page 34
PIND
-
PIND6
PIND5
PIND4
PIND3
PIND2
PIND1
PIND0
page 34
Reserved
Reserved
Reserved
ACSR
ACD
-
ACO
ACI
ACIE
-
ACIS1
ACIS0
page 27
Reserved
Reserved
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 “1” to them. Note that the CBI and SBI instructions will operate on all
bits in the I/O register, writing a “1” back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work
with registers $00 to $1F only.
62 AT90S1200
0838H–AVR–03/02
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