參數(shù)資料
型號(hào)： UPD784035YGC
廠商： NEC Corp.
英文描述： 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述： 16-/8-bit的單晶片微控制器
文件頁(yè)數(shù)： 26/94頁(yè)
文件大?。?/td> 503K
代理商： UPD784035YGC
μ
PD784035Y, 784036Y, 784037Y, 784038Y
26
6.2.3 Special function registers (SFRs)
The special function registers, such as the mode registers and control registers of the internal peripheral hardware,
are registers to which special functions are allocated. These registers are mapped to a 256-Byte space of addresses
0FF00H through 0FFFFH
Note
.
Note
On execution of the LOCATION 0 instruction. FFF00H through FFFFFH on execution of the LOCATION
0FH instruction.
Caution Do not access an address in this area to which no SFR is allocated. If such an address is
accessed by mistake, the
μ
PD784038Y may be in the deadlock status. This deadlock status can
be cleared only by inputting the RESET signal.
Table 6-1 lists the special function registers (SFRs). The meanings of the symbols in this table are as follows:
Symbol ...............................
Symbol indicating an SFR. This symbol is reserved for NEC’s assembler
(RA78K4). It can be used as an sfr variable by the #pragma sfr command with
the C compiler (CC78K4).
R/W ....................................
Indicates whether the SFR is read-only, write-only, or read/write.
R/W : Read/write
R
: Read-only
W
: Write-only
Bit units for manipulation ..
Bit units in which the value of the SFR can be manipulated.
SFRs that can be manipulated in 16-bit units can be described as the oper-
and sfrp of an instruction. To specify the address of this SFR, describe an
even address.
SFRs that can be manipulated in 1-bit units can be described as the operand
of a bit manipulation instruction.
After reset ..........................
Indicates the status of the register when the RESET signal has been input.
相關(guān)PDF資料
PDF描述
UPD784035YGK 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784035Y 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
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