參數(shù)資料
型號： TSC80251G2D-L16CER
廠商： Atmel
文件頁數(shù)： 31/77頁
文件大?。?/td> 0K
描述： IC MCU 8BIT 16MHZ LO VOLT 44VQFP
標(biāo)準包裝： 1,500
系列： 8x251
核心處理器： C251
芯體尺寸： 8/16-位
速度： 16MHz
連通性： EBI/EMI，I²C，Microwire，SPI，UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 32
程序存儲器類型： ROMless
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： 0°C ~ 70°C
封裝/外殼： 44-LQFP
包裝： 帶卷 (TR)
其它名稱： TSC80251G2DL16CER
37
AT/TSC8x251G2D
4135F–8051–11/06
Table 30.
Summary of Conditional Jump Instructions (2/2)
Notes: 1. A shaded cell denotes an instruction in the C51 Architecture.
2. States are given as jump not-taken/taken.
3. If this instruction addresses an I/O Port (Px, x = 0-3), add 1 to the number of states.
Add 2 if it addresses a Peripheral SFR.
4. If this instruction addresses an I/O Port (Px, x = 0-3), add 2 to the number of states.
Jump if bitJB <src>, rel(PC)
← (PC) + size (instr);
IF [src opnd = 1] THEN (PC)
← (PC) + rel
Jump if not bitJNB <src>, rel(PC)
← (PC) + size (instr);
IF [src opnd = 0] THEN (PC)
← (PC) + rel
Jump if bit and clearJBC <dest>, rel(PC)
← (PC) + size (instr);
IF [dest opnd = 1] THEN
dest opnd
← 0
(PC)
← (PC) + rel
Jump if accumulator is zeroJZ rel(PC)
← (PC) + size (instr);
IF [(A) = 0] THEN (PC)
← (PC) + rel
Jump if accumulator is not zeroJNZ rel(PC)
← (PC) + size (instr);
IF [(A)
≠ 0] THEN (PC) ← (PC) + rel
Compare and jump if not equalCJNE <src1>, <src2>, rel(PC)
← (PC) + size (instr);
IF [src opnd1 < src opnd2] THEN (CY)
← 1
IF [src opnd1
≥ src opnd2] THEN (CY) ← 0
IF [src opnd1
≠ src opnd2] THEN (PC) ← (PC) + rel
Decrement and jump if not zeroDJNZ <dest>, rel(PC)
← (PC) + size (instr); dest opnd ← dest opnd -1;
IF [
(Z)] THEN (PC) ← (PC) + rel
Mnemonic <dest>, <src>(1)
Comments
Binary Mode(2)
Source Mode(2)
Bytes
States
Bytes
States
JB
bit51, rel
Jump if direct bit is set
3
2/5(3)(6)
32/5(3)(6)
bit, rel
Jump if direct bit of 8-bit address
location is set
54/7(3)(6)
43/6(3)(6)
JNB
bit51, rel
Jump if direct bit is not set
3
2/5(3)(6)
32/5(3)(6)
bit, rel
Jump if direct bit of 8-bit address
location is not set
54/7(3)(6)
43/6(3)
JBC
bit51, rel
Jump if direct bit is set & clear bit
3
4/7(5)(6)
34/7(5)(6)
bit, rel
Jump if direct bit of 8-bit address
location is set and clear
5
7/10(5)(
6)
46/9(5)(6)
JZ
rel
Jump if ACC is zero
2
2/5(6)
22/5(6)
JNZ
rel
Jump if ACC is not zero
2
2/5(6)
22/5(6)
CJNE
A, dir8, rel
Compare direct address to ACC and
jump if not equal
32/5(3)(6)
A, #data, rel
Compare immediate to ACC and
jump if not equal
32/5(6)
Rn, #data, rel
Compare immediate to register and
jump if not equal
32/5(6)
43/6(6)
at Ri, #data, rel
Compare immediate to indirect and
jump if not equal
33/6(6)
44/7(6)
DJNZ
Rn, rel
Decrement register and jump if not
zero
22/5(6)
33/6(6)
dir8, rel
Decrement direct address and jump
if not zero
33/6(4)(6)
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