參數(shù)資料
型號: AT90S8535-8PI
廠商: Atmel
文件頁數(shù): 99/127頁
文件大?。?/td> 0K
描述: IC MCU 8K FLSH 8MHZ A/D IT 40DIP
標(biāo)準(zhǔn)包裝: 18
系列: AVR® 90S
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 8KB(4K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
1997 Microchip Technology Inc.
DS30272A-page 73
PIC16C71X
BTFSS
Bit Test f, Skip if Set
Syntax:
[
label] BTFSS f,b
Operands:
0
≤ f ≤ 127
0
≤ b < 7
Operation:
skip if (f<b>) = 1
Status Affected:
None
Encoding:
01
11bb
bfff
ffff
Description:
If bit 'b' in register 'f' is '0' then the next
instruction is executed.
If bit 'b' is '1', then the next instruction is
discarded and a NOP is executed
instead, making this a 2TCY instruction.
Words:
1
Cycles:
1(2)
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Process
data
NOP
If Skip:
(2nd Cycle)
Q1
Q2
Q3
Q4
NOP
Example
HERE
FALSE
TRUE
BTFSC
GOTO
FLAG,1
PROCESS_CODE
Before Instruction
PC =
address
HERE
After Instruction
if FLAG<1> = 0,
PC =
address FALSE
if FLAG<1> = 1,
PC =
address TRUE
CALL
Call Subroutine
Syntax:
[
label ] CALL k
Operands:
0
≤ k ≤ 2047
Operation:
(PC)+ 1
→ TOS,
k
→ PC<10:0>,
(PCLATH<4:3>)
→ PC<12:11>
Status Affected:
None
Encoding:
10
0kkk
kkkk
Description:
Call Subroutine. First, return address
(PC+1) is pushed onto the stack. The
eleven bit immediate address is loaded
into PC bits <10:0>. The upper bits of
the PC are loaded from PCLATH.
CALL
is a two cycle instruction.
Words:
1
Cycles:
2
Q Cycle Activity:
Q1
Q2
Q3
Q4
1st Cycle
Decode
Read
literal 'k',
Push PC
to Stack
Process
data
Write to
PC
2nd Cycle
NOP
Example
HERE
CALL
THERE
Before Instruction
PC = Address HERE
After Instruction
PC = Address THERE
TOS = Address HERE+1
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