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參數(shù)資料
| 型號： | ATMEL |
| 英文描述： | (426.65 k) |
| 中文描述： | （426.65十一） |
| 文件頁數(shù)： | 40/42頁 |
| 文件大?。?/td> | 426K |
| 代理商： | ATMEL |
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Data Book Updates and Changes
40
14-75
In the LD(X) description, change the last sentence of the third paragraph
from
“The RAMPX register in the I/O area
is updated in parts with more than 64K bytes data space.”
to
“The RAMPX register in the I/O area is updated in
parts with more than 64K bytes data space or more than 64K bytes program memory, and the displacement is
added to the entire 24-bit address on such devices.”
14-77
In the LD(Y) description, change the last sentence of the third paragraph
from
“The RAMPY register in the I/O area
is updated in parts with more than 64K bytes data space.”
to
“The RAMPY register in the I/O area is updated in
parts with more than 64K bytes data space or more than 64K bytes program memory, and the displacement is
added to the entire 24-bit address on such devices.”
14-79
In the LD(Z) description, the last three sentences of the third paragraph are incorrect, starting with “The RAMPZ
register in the I/O area is updated in parts with more than 64K bytes data space, and that the displacement...”.
Change these sentences to “The RAMPY register in the I/O area is updated in parts with more than 64K bytes data
space or more than 64K bytes program memory, and the displacement is added to the entire 24-bit address on
such devices.”
14-83
In the LPM description, add this paragraph after the first paragraph: “Devices with Self-Programming capability can
use the LPM instruction to read the fuse and lock bit values. Refer to the device documentation for a detailed
description.”
14-90
In the MULSU description, replace the example with the following example:
;******************************************************************************
;* DESCRIPTION
;*
Signed multiply of two 16-bit numbers with 32-bit result.
;* USAGE
;*
r19:r18:r17:r16 = r23:r22 * r21:r20
;******************************************************************************
muls16x16_32:
clr
r2
muls
r23, r21
; (signed)ah * (signed)bh
movw
r19:r18, r1:r0
mul
r22, r20
; al * bl
movw
r17:r16, r1:r0
mulsu
r23, r20
; (signed)ah * bl
sbc
r19, r2
add
r17, r0
adc
r18, r1
adc
r19, r2
mulsu
r21, r22
; (signed)bh * al
sbc
r19, r2
add
r17, r0
adc
r18, r1
adc
r19, r2
ret
14-124 In the SPM description, at the end of the sentence “When writing the program memory, the Z register is used as
page or word address, and the R1:R0 register pair is used as data“, add the footnote “R1 determines the instruc-
tion high byte, and R0 determines the instruction low byte.”
14-124 In the SPM description, SPM is limited to the first 64 kB of program memory. This is not correct, SPM can access
the entire program memory, and uses the RAMPZ register together with the Z register. Consequently:
- In the first paragraph, change the last sentence to “This instruction can address the entire program memory.”
- In the first paragraph, change “the Z register” to “the RAMPZ and Z registers”.
- In the
Operation
description, change “(Z) to “(RAMPZ:Z)”.
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相關(guān)代理商/技術(shù)參數(shù) |
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