- 您现在的位置：买卖IC网 > PDF目录45027 > M34506M2-XXXFP 4-BIT, MROM, MICROCONTROLLER, PDSO20 PDF资料下载
参数资料
| 型号： | M34506M2-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, MICROCONTROLLER, PDSO20 |
| 封装： | 5.30 X 12.60 MM, 1.27 MM PITCH, PLASTIC, SOP-20 |
| 文件页数： | 110/114页 |
| 文件大小： | 836K |
| 代理商： | M34506M2-XXXFP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页当前第110页第111页第112页第113页第114页
4
4-6
EIT
32180 Group User’s Manual (Rev.1.0)
4.2.3 Trap
Traps are software interrupts which are generated by executing the TRAP instruction. Sixteen distinct vector
addresses are provided corresponding to TRAP instruction operands 0–15.
4.3 EIT Processing Procedure
EIT processing consists of two parts, one in which they are handled automatically by hardware, and one in which
they are handled by user-created programs (EIT handlers). The procedure for processing EITs when accepted,
except for a rest interrupt, is shown below.
4.2 EIT Events
Figure 4.3.1 Outline of the EIT Processing Procedure
When an EIT is accepted, the CPU branches to the EIT vector after hardware preprocessing (as will be described
later). The EIT vector has an entry address assigned for each EIT. This is where the BRA (branch) instruction for
the EIT handler (not the jump address itself) is written.
In the hardware preprocessing, the PC is transferred to the BPC (backup PC), and the content of the PSW register’s
PSW field is transferred to the BPSW field in that register.
Other necessary operations must be performed in the user-created EIT handler. These include saving the BPC and
PSW registers (including the BPSW field) and the general-purpose registers to be used in the EIT handler to the
stack. In addition, the accumulator and the FPSR register must be saved to the stack as necessary. Remember
that all these registers must be saved to the stack in a program by the user.
When processing by the EIT handler is completed, restore the saved registers from the stack and finally execute
the RTE instruction. Control is thereby returned from the EIT processing to the program that was being executed
when the EIT occurred. (This does not apply to the System Break Interrupt, however.)
In the hardware postprocessing, the BPC is returned to the PC, and the content of the PSW register’s BPSW field
is returned to the PSW field in that register. Note that the values stored in the BPC and the PSW register’s BPSW
field after executing the RTE instruction are undefined.
Instruction
A
PC
→BPC
PSW
→BPSW
EIT vector
entry
EIT handler except for SBI
RTE
instruction
Program suspended
and EIT request
accepted
Instruction
processing-canceled
type (RIE, AE)
Instruction processing-completed
type (FPE, EI, TRAP)
Program execution restarted
EIT request
generated
Hardware preprocessing
BPC, PSW, FPSR
and general-purpose
registers are saved
to the stack
Branch
instruction
General-purpose
registers, PSW, FPSR
and BPC are restored
from the stack
Hardware postprocessing
(SBI)
Program terminated
or system is reset
User-created EIT handler
BPSW
→PSW
BPC
→PC
Processing
by handler
Note 1: Indicates saving and restoring the PSW register bits between its PSW and BPSW fields.
(Note 1)
SBI
(System Break
Interrupt processing)
Instruction
B
Instruction
C
Instruction
C
Instruction
D
相关PDF资料 |
PDF描述 |
|---|---|
| M34507E4FP | 4-BIT, OTPROM, MICROCONTROLLER, PDSO24 |
| M34507M2-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO24 |
| M34507M4-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO24 |
| M34507M2-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO24 |
| M34509G4FP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M34506M4 | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34506M4-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES |
| M34507E4FP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34507M2-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES |
| M34507M4-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
发布紧急采购，3分钟左右您将得到回复。