參數(shù)資料
型號(hào): UPD784215AGC
廠商: NEC Corp.
英文描述: 16-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16位單晶片微控制器
文件頁數(shù): 55/100頁
文件大小: 561K
代理商: UPD784215AGC
Data Sheet U14121EJ2V0DS00
55
μ
PD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
8.3 Context Switching
When an interrupt request is generated or when the BRKCS instruction is executed, a predetermined register
bank is selected by hardware. Context switching is a function that branches execution to a vector address stored in
advance in the register bank, while at the same time stacking the current contents of the program counter (PC) and
program status word (PSW) to the register bank.
The branch address is in a range of 0 to FFFFH.
Figure 8-1. Context Switching Operation When Interrupt Request Is Generated
Register bank n (n = 0 to 7)
0000B
<7> Transfer
PC19-16
PC15-0
<6> Exchange
<5> Save
<2> Save
Temporary register
<1> Save
PSW
V
U
T
W
A
B
R5
R7
D
H
X
C
R4
R6
E
L
VP
UP
<3> Switching of register bank
(RBS0 to RBS2
n)
<4> RSS
0
IE
0
Register bank
(0 to 7)
(Bits 8 to 11 of
temporary register)
相關(guān)PDF資料
PDF描述
UPD784215AGF 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784215A 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214A 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214AGC 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784214AGF 16-BIT SINGLE-CHIP MICROCONTROLLERS
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