AT90LS2343 ATMEL [ATMEL Corporation], AT90LS2343 Datasheet - Page 58

• Manufacturer Part Number: AT90LS2343
• Description: 8-Bit Microcontroller with 2K Bytes of In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

AT90S2323/2343 Register Summary
Note:
58
Address
$3E ($5E)
$3D ($5D)
$3C ($5C)
$3B ($5B)
$3A ($5A)
$2E ($4E)
$2D ($4D)
$2C ($4C)
$2B ($4B)
$2A ($4A)
$1E ($3E)
$1D ($3D)
$1C ($3C)
$1B ($3B)
$1A ($3A)
$3F ($5F)
$39 ($59)
$38 ($58)
$37 ($57)
$36 ($56)
$35 ($55)
$34 ($54)
$33 ($53)
$32 ($52)
$31 ($51)
$30 ($50)
$2F ($4F)
$29 ($49)
$28 ($48)
$27 ($47)
$26 ($46)
$25 ($45)
$24 ($44)
$23 ($43)
$22 ($42)
$21 ($41)
$20 ($40)
$1F ($3F)
$19 ($39)
$18 ($38)
$17 ($37)
$16 ($36)
$15 ($35)
$00 ($20)
…
1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
2. 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
AT90S/LS2323/2343
should never be written.
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.
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
MCUCR
WDTCR
Name
MCUSR
TCCR0
PORTB
GIMSK
TCNT0
TIMSK
SREG
EEAR
EEDR
EECR
DDRB
GIFR
PINB
TIFR
SPL
Timer/Counter0 (8 Bits)
EEPROM Data Register
Bit 7
SP7
I
-
-
-
-
-
-
-
-
-
-
-
-
-
EEPROM Address Register
Bit 6
INTF0
INT0
SP6
T
-
-
-
-
-
-
-
-
-
-
Bit 5
SP5
SE
H
-
-
-
-
-
-
-
-
-
-
PORTB4
WDTOE
Bit 4
PINB4
DDB4
SP4
SM
S
-
-
-
-
-
-
PORTB3
Bit 3
PINB3
DDB3
WDE
SP3
V
-
-
-
-
-
-
-
PORTB2
EEMWE
Bit 2
WDP2
PINB2
DDB2
CS02
SP2
N
-
-
-
-
-
PORTB1
EXTRF
Bit 1
TOIE0
ISC01
WDP1
EEWE
PINB1
TOV0
DDB1
CS01
SP1
Z
-
PORTB0
Bit 0
ISC00
PORF
WDP0
PINB0
EERE
DDB0
CS00
SP0
C
-
-
-
page 25
page 25
page 26
page 23
page 18
page 19
page 24
page 25
page 29
page 30
page 31
page 32
page 32
page 33
page 35
page 35
page 36
Page
1004D–09/01