參數(shù)資料
型號: T48C862x-Rf-TNS
廠商: Atmel Corp.
元件分類: 4位微控制器
英文描述: Microcontroller with UHF ASK/FSK Transmitter
中文描述: 微控制器,帶有超高頻ASK / FSK發(fā)射器
文件頁數(shù): 16/108頁
文件大?。?/td> 1023K
代理商: T48C862X-RF-TNS
16
T48C862-R4 [Preliminary]
4551C–4BMCU–01/04
Figure 11.
RAM Map
Registers
The microcontroller has seven programmable registers and one condition code register
(see Figure 12).
Program Counter (PC)
The program counter is a 12-bit register which contains the address of the next instruc-
tion to be fetched from the EEPROM. Instructions currently being executed are decoded
in the instruction decoder to determine the internal micro-operations. For linear code (no
calls or branches), the program counter is incremented with every instruction cycle. If a
branch-, call-, return-instruction or an interrupt is executed, the program counter is
loaded with a new address. The program counter is also used with the table instruction
to fetch 8-bit wide EEPROM constants.
Figure 12.
Programming Mode l
RAM
(256 x 4-bit)
FCh
00h
Autosleep
FFh
03h
04h
X
Y
SP
RP
TOS-1
Expression
stack
Return
stack
Global
variables
R
07h
Global
variables
4-bit
TOS
TOS-1
TOS-2
3
0
SP
Expression stack
Return stack
0
11
12-bit
RP
TOS
CCR
0
3
0
I
3
C
0
7
0
7
7
0
11
RP
SP
X
Y
PC
--
B
Program counter
Return stack pointer
Expression stack pointer
RAM address register (X)
RAM address register (Y)
Top of stack register
Condition code register
Interrupt enable
Carry / borrow
Branch
0
7
0
0
0
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