參數(shù)資料
型號: UPD784224GK
廠商: NEC Corp.
英文描述: 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16/8-BIT單晶片微控制器
文件頁數(shù): 23/92頁
文件大?。?/td> 687K
代理商: UPD784224GK
23
μ
PD784224, 784225, 784224Y, 784225Y
Data Sheet U12376EJ1V0DS00
6.2 CPU Registers
6.2.1 General-purpose registers
Sixteen 8-bit general-purpose registers are available. Two 8-bit registers can be also used in pairs as a 16-bit
register. Of the 16-bit registers, four can be used in combination with an 8-bit register for address expansion as
24-bit address specification registers.
Eight banks of these registers are available which can be selected by using software or the context switching
function.
The general-purpose registers except V, U, T, and W registers for address expansion are mapped to the internal
RAM.
Figure 6-3. General-Purpose Register Format
A (R1)
B (R3)
R5
R7
R9
R11
D (R13)
H (R15)
V
U
T
W
VVP (RG4)
UUP (RG5)
TDE (RG6)
WHL (RG7)
Parentheses ( ) indicate an absolute name.
X (R0)
C (R2)
R4
R6
R8
R10
E (R12)
L (R14)
AX (RP0)
BC (RP1)
RP2
RP3
VP (RP4)
UP (RP5)
DE (RP6)
HL (RP7)
8 banks
Caution
Registers R4, R5, R6, R7, RP2, and RP3 can be used as X, A, C, B, AX, and BC registers,
respectively, by setting the RSS bit of the PSW to 1. However, use this function only for recycling
the program of the 78K/III Series.
相關PDF資料
PDF描述
UPD784224Y 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784225 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784225Y 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784224YGK 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD78C10AGF-3BE MS27467T25B61P
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