参数资料
型号: UPD70F3261YGF-JBT-A
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 20 MM, PLASTIC, QFP-100
文件页数: 84/129页
文件大小: 8549K
代理商: UPD70F3261YGF-JBT-A
CHAPTER 3 CPU FUNCTION
User’s Manual U16541EJ5V1UD
58
3.2.2
System register set
The system registers control the status of the CPU and hold interrupt information.
These registers can be read or written by using system register load/store instructions (LDSR and STSR), using
the system register numbers listed below.
Table 3-2. System Register Numbers
Operand Specification
System
Register
Number
System Register Name
LDSR Instruction STSR Instruction
0
Interrupt status saving register (EIPC)
Note 1
1
Interrupt status saving register (EIPSW)
Note 1
2
NMI status saving register (FEPC)
Note 1
3
NMI status saving register (FEPSW)
Note 1
4
Interrupt source register (ECR)
×
5
Program status word (PSW)
6 to 15
Reserved for future function expansion (operation is not guaranteed if these
registers are accessed)
×
16
CALLT execution status saving register (CTPC)
17
CALLT execution status saving register (CTPSW)
18
Exception/debug trap status saving register (DBPC)
Note 2
19
Exception/debug trap status saving register (DBPSW)
Note 2
20
CALLT base pointer (CTBP)
21 to 31
Reserved for future function expansion (operation is not guaranteed if these
registers are accessed)
×
Notes 1. Because only one set of these registers is available, the contents of these registers must be saved by
program if multiple interrupts are enabled.
2. These registers can be accessed only during the interval between the execution of the DBTRAP
instruction or illegal opcode execution and DBRET instruction.
Caution
Even if EIPC or FEPC, or bit 0 of CTPC is set to 1 by the LDSR instruction, bit 0 is ignored when
execution is returned to the main routine by the RETI instruction after interrupt servicing (this is
because bit 0 of the PC is fixed to 0). Set an even value to EIPC, FEPC, and CTPC (bit 0 = 0).
Remark
√: Can be accessed
×: Access prohibited
<R>
相关PDF资料
PDF描述
UPD780031AYCW(A)-XXX 8-BIT, MROM, 8.38 MHz, MICROCONTROLLER, PDIP64
UPD780123GB(A1)-XXX-8ET 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP52
UPD780146GC-XXX-8BT 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
UPD784216AGC-XXX-8EU 16-BIT, MROM, 12.5 MHz, MICROCONTROLLER, PQFP100
UPD789304GK-XXX-9ET 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP64
相关代理商/技术参数
参数描述
UPD70F3263GC-8EA-A 制造商:Renesas Electronics Corporation 功能描述:
UPD70F3263HYGC-8EA-A 制造商:Renesas Electronics Corporation 功能描述:
UPD70F3264YGJ-UEN-A 制造商:Renesas Electronics Corporation 功能描述:
UPD70F3266YGJ-UEN-A 制造商:Renesas Electronics Corporation 功能描述:
UPD70F3281YGC-8EA-A 制造商:Renesas Electronics Corporation 功能描述: