參數(shù)資料
| 型號： | ATAM893T-TKS |
| 廠商： | Atmel |
| 文件頁數(shù)： | 78/98頁 |
| 文件大小： | 0K |
| 描述： | IC MON TIRE-PRESS ATARX9X SER |
| 標準包裝： | 830 |
| 系列： | MARC4 |
| 核心處理器： | MARC4 |
| 芯體尺寸： | 4-位 |
| 速度： | 4MHz |
| 連通性： | SSI（2 線，3 線） |
| 外圍設備： | 欠壓檢測/復位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 16 |
| 程序存儲器容量： | 4KB（4K x 8） |
| 程序存儲器類型： | EEPROM |
| EEPROM 大小： | 64 x 16 |
| RAM 容量： | 256 x 4 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 6.5 V |
| 振蕩器型： | 內部 |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 20-SOIC（0.209"，5.30mm 寬） |
| 包裝： | 管件 |
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8
4680C–4BMCU–01/05
ATAM893-D
4.2.3.6
Top Of Stack (TOS)
The top of stack register is the accumulator of the MARC4. All arithmetic/logic, memory refer-
ence and I/O operations use this register. The TOS register receives data from the ALU, ROM,
RAM or I/O bus.
4.2.3.7
Condition Code Register (CCR)
The 4-bit wide condition code register contains the branch, the carry and the interrupt enable
flag. These bits indicate the current state of the CPU. The CCR flags are set or reset by ALU
operations. The instructions SET_BCF, TOG_BF, CCR! and DI allow direct manipulation of the
condition code register.
4.2.3.8
Carry/Borrow (C)
The carry/borrow flag indicates that the borrowing or carrying out of Arithmetic Logic Unit (ALU)
occurred during the last arithmetic operation. During shift and rotate operations, this bit is used
as a fifth bit. Boolean operations have no affect on the C-flag.
4.2.3.9
Branch (B)
The branch flag controls the conditional program branching. Should the branch flag have been
set by a previous instruction, a conditional branch will cause a jump. This flag is affected by
arithmetic, logic, shift, and rotate operations.
4.2.3.10
Interrupt Enable (I)
The interrupt enable flag globally enables or disables the triggering of all interrupt routines with
the exception of the non-maskable reset. After a reset or on executing the DI instruction, the
interrupt enable flag is reset, thus disabling all interrupts. The core will not accept any further
interrupt requests until the interrupt enable flag has been set again by either executing an EI,
RTI or SLEEP instruction.
4.2.4
ALU
The 4-bit ALU performs all the arithmetic, logical, shift and rotate operations with the top two ele-
ments of the expression stack (TOS and TOS-1) and returns the result to the TOS. The ALU
operations affect the carry/borrow and branch flag in the condition code register (CCR).
Figure 4-5.
ALU Zero-address Operations
TOS-1
CCR
RAM
TOS-2
SP
TOS-3
TOS
ALU
TOS-4
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ATAM893T-TKSYD | 功能描述:4位微控制器 - MCU Marc4 micrium 4k FLASH RoHS:否 最大時鐘頻率:32 KHz/4 MHz 程序存儲器大小:4 KB 封裝 / 箱體:SSO-20 制造商:Atmel 核心:MARC4 數(shù)據(jù)總線寬度:4 bit 安裝風格:SMD/SMT |
| ATAM893X-TKHYZ | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Flash Version for ATAR080, ATAR090/890 and ATAR092/892 |
| ATAM893X-TKQYZ | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Flash Version for ATAR080, ATAR090/890 and ATAR092/892 |
| ATAM893X-TKSYZ | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Flash Version for ATAR080, ATAR090/890 and ATAR092/892 |
| ATAM894 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8k-flash Microcontroller |
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