参数资料
型号: ADUC842BCPZ32-3
厂商: Analog Devices Inc
文件页数: 10/88页
文件大小: 0K
描述: IC MCU 32K FLASH ADC/DAC 56LFCSP
标准包装: 1
系列: MicroConverter® ADuC8xx
核心处理器: 8052
芯体尺寸: 8-位
速度: 8.38MHz
连通性: I²C,SPI,UART/USART
外围设备: DMA,PSM,PWM,温度传感器,WDT
输入/输出数: 32
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 8x12b,D/A 2x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 56-VFQFN 裸露焊盘,CSP
包装: 托盘
ADuC841/ADuC842/ADuC843
Rev. 0 | Page 18 of 88
Mnemonic
Description
Bytes
Cycles
Branching
JMP @A+DPTR
Jump indirect relative to DPTR
1
3
RET
Return from subroutine
1
4
RETI
Return from interrupt
1
4
ACALL addr11
Absolute jump to subroutine
2
3
AJMP addr11
Absolute jump unconditional
2
3
SJMP rel
Short jump (relative address)
2
3
JC rel
Jump on carry equal to 1
2
3
JNC rel
Jump on carry equal to 0
2
3
JZ rel
Jump on accumulator = 0
2
3
JNZ rel
Jump on accumulator not equal to 0
2
3
DJNZ Rn,rel
Decrement register, JNZ relative
2
3
LJMP
Long jump unconditional
3
4
LCALL addr16
Long jump to subroutine
3
4
JB bit,rel
Jump on direct bit = 1
3
4
JNB bit,rel
Jump on direct bit = 0
3
4
JBC bit,rel
Jump on direct bit = 1 and clear
3
4
CJNE A,dir,rel
Compare A, direct JNE relative
3
4
CJNE A,#data,rel
Compare A, immediate JNE relative
3
4
CJNE Rn,#data,rel
Compare register, immediate JNE relative
3
4
CJNE @Ri,#data,rel
Compare indirect, immediate JNE relative
3
4
DJNZ dir,rel
Decrement direct byte, JNZ relative
3
4
Miscellaneous
NOP
No operation
1
1. One cycle is one clock.
2. Cycles of MOVX instructions are four cycles when they have 0 wait state. Cycles of MOVX instructions are 4 + n cycles when they have n wait states.
3. Cycles of LCALL instruction are three cycles when the LCALL instruction comes from interrupt.
OTHER SINGLE-CYCLE CORE FEATURES
Timer Operation
Timers on a standard 8052 increment by 1 with each machine
cycle. On the ADuC841/ADuC842/ADuC843, one machine
cycle is equal to one clock cycle; therefore the timers increment
at the same rate as the core clock.
ALE
The output on the ALE pin on a standard 8052 part is a clock at
1/6th of the core operating frequency. On the ADuC841/
ADuC842/ADuC843 the ALE pin operates as follows. For a
single machine cycle instruction,ALE is high for the first half of
the machine cycle and low for the second half. The ALE output
is at the core operating frequency. For a two or more machine
cycle instruction, ALE is high for the first half of the first
machine cycle and low for the rest of the machine cycles.
External Memory Access
There is no support for external program memory access on the
parts. When accessing external RAM, the EWAIT register may
need to be programmed to give extra machine cycles to MOVX
commands. This is to account for differing external RAM access
speeds.
EWAIT SFR
SFR Address
9FH
Power-On Default
00H
Bit Addressable
No
This special function register (SFR) is programmed with the
number of wait states for a MOVX instruction. This value can
range from 0H to 7H.
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