mc68331cpv20b1 Freescale Semiconductor, Inc, mc68331cpv20b1 Datasheet - Page 23
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mc68331cpv20b1
Manufacturer Part Number
mc68331cpv20b1
Description
Mc68331 32 Bit Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68331CPV20B1.pdf
(254 pages)
- Current page: 23 of 254
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MC68331
USER’S MANUAL
A specific mnemonic within a range is referred to by mnemonic and number. A15 is
bit 15 of accumulator A; ADDR7 is line 7 of the address bus; CSOR0 is chip-select op-
tion register 0. A range of mnemonics is referred to by mnemonic and the numbers
that define the range. AM[35:30] are bits 35 to 30 of accumulator M; CSOR[0:5] are
the first six option registers.
Parentheses are used to indicate the content of a register or memory location, rather
than the register or memory location itself. (A) is the content of accumulator A. (M M
LSB means least significant bit or bits. MSB means most significant bit or bits. Refer-
ences to low and high bytes are spelled out.
LSW means least significant word or words. MSW means most significant word or
words.
ADDR is the address bus. ADDR[7:0] are the eight LSB of the address bus.
DATA is the data bus. DATA[15:8] are the eight MSB of the data bus.
1) is the content of the word at address M.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
NOMENCLATURE
2-7
2
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