參數(shù)資料
型號(hào)： TC9325F
廠商： Toshiba Corporation
英文描述： Single-Chip DTS Microcontroller (DTS-20)
中文描述： 單芯片微丘（丘- 20）
文件頁(yè)數(shù)： 11/101頁(yè)
文件大?。?/td> 1802K
代理商： TC9325F
TC9325F
2002-05-14
11
Description of Operations
CPU
The CPU consists of a program counter, a stack register, an ALU, program memory, data memory, a
G-register, a data register, a DAL address register, a carry flip-flop (F/F), a judge circuit, and an interrupt
circuit.
. Program Counter (PC)
The program counter is a 14-bit binary up counter used to address program memory (ROM). The
program counter is cleared by a system reset and starts from address 0.
The PC is normally incremented by 1 at the execution of each instruction. However, executing a Jump or
Call instruction loads the address specified in the instruction’s operand to the PC.
When an instruction with a skip function (for example, the AIS, SLTI, TMT, and RNS instructions) is
executed and the result matches the skip condition, the PC is incremented by 2 and the next instruction is
skipped.
When an interrupt is received, the system loads the vector address corresponding to the interrupt.
Note: Program memory (ROM) uses the address range 0000H to 3FFFH. Access to addresses outside this
range is prohibited.
Contents of Program Counter (PC)
Instruction
PC13 PC12 PC11 PC10 PC9
PC8
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
JUMP ADDR1
CALL ADDR2
0
0
DAL ADDR3, (r)
(DAL bit
=
0)
0
0
0
0
DAL (DA)
(DAL bit
=
1)
RN, RNS, RNI
When interrupt received
Power-on reset, reset by
RESET pin
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Priority
Interrupt Source
Vector Address
1
INTR1 pin
0001H
2
INTR2 pin
0002H
3
Serial interface 1
0003H
4
Serial interface 3/4
0004H
5
Timer-counter
0005H
6
Serial interface 2
0006H
2. Stack Register
The stack register consists of 16
×
14 bits. When a subroutine call instruction is executed or an interrupt
is processed, this register stores a value equal to the contents of the program counter
+
1 (that is, the
return address). Executing a return instruction (RN, RNS, RNI) loads the contents of the stack register to
the program counter.
The stack register can nest to 16 stack levels.
DAL address register (DA)
Contents of stack register
Vector address for interrupt
Instruction operand (ADDR2)
Instruction operand (ADDR1)
Instruction operand (ADDR3)
Contents of general
register (r)
相關(guān)PDF資料
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