參數資料
型號: PIC18F85K90T-I/PTRSL
廠商: Microchip Technology
文件頁數: 50/110頁
文件大小: 0K
描述: MCU 8BIT 32K FLASH 80-TQFP
標準包裝: 1,200
系列: PIC® XLP™ 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 64MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設備: 欠壓檢測/復位,LCD,POR,PWM,WDT
輸入/輸出數: 69
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 1K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數據轉換器: A/D 24x12b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 80-TQFP
包裝: 帶卷 (TR)
2010 Microchip Technology Inc.
Preliminary
DS39964B-page 497
PIC18F47J53 FAMILY
TBLRD
Table Read
Syntax:
TBLRD ( *; *+; *-; +*)
Operands:
None
Operation:
if TBLRD *,
(Prog Mem (TBLPTR))
TABLAT;
TBLPTR – No Change
if TBLRD *+,
(Prog Mem (TBLPTR))
TABLAT;
(TBLPTR) + 1 TBLPTR
if TBLRD *-,
(Prog Mem (TBLPTR))
TABLAT;
(TBLPTR) – 1 TBLPTR
if TBLRD +*,
(TBLPTR) + 1 TBLPTR;
(Prog Mem (TBLPTR))
TABLAT
Status Affected: None
Encoding:
0000
10nn
nn=0 *
=1 *+
=2 *-
=3 +*
Description:
This instruction is used to read the contents
of Program Memory (P.M.). To address the
program memory, a pointer called Table
Pointer (TBLPTR) is used.
The TBLPTR (a 21-bit pointer) points to
each byte in the program memory. TBLPTR
has a 2-Mbyte address range.
TBLPTR[0] = 0: Least Significant Byte of
Program Memory Word
TBLPTR[0] = 1: Most Significant Byte of
Program Memory Word
The TBLRD instruction can modify the value
of TBLPTR as follows:
no change
post-increment
post-decrement
pre-increment
Words:
1
Cycles:
2
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
No
operation
No
operation
No
operation
No
operation
No operation
(Read Program
Memory)
No
operation
No operation
(Write
TABLAT)
TBLRD
Table Read (Continued)
Example 1:
TBLRD
*+ ;
Before Instruction
TABLAT
=
55h
TBLPTR
=
00A356h
MEMORY(00A356h)
=
34h
After Instruction
TABLAT
=
34h
TBLPTR
=
00A357h
Example 2:
TBLRD
+* ;
Before Instruction
TABLAT
=
AAh
TBLPTR
=
01A357h
MEMORY(01A357h)
=
12h
MEMORY(01A358h)
=
34h
After Instruction
TABLAT
=
34h
TBLPTR
=
01A358h
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