参数资料
型号: ATAM893T-TKQ
厂商: Atmel
文件页数: 34/98页
文件大小: 0K
描述: IC MON TIRE-PRESS ATARX9X SER
标准包装: 4,000
系列: MARC4
核心处理器: MARC4
芯体尺寸: 4-位
速度: 4MHz
连通性: SSI(2 线,3 线)
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 16
程序存储器容量: 4KB(4K x 8)
程序存储器类型: EEPROM
EEPROM 大小: 64 x 16
RAM 容量: 256 x 4
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 6.5 V
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 20-SOIC(0.209",5.30mm 宽)
包装: 带卷 (TR)
4
4680C–4BMCU–01/05
ATAM893-D
3.5
RC-oscillator Frequency
The typical frequency of the internal RC-oscillator is about 5% higher for the Flash part com-
pared to the ROM part. But due to the wide range of ±50% overall tolerances this should not
affect the application too much.
This 5% is also valid for the RC-oscillator with an external resistor. For a frequency of 4 MHz the
flash part requires a resistor of 180 k, while the ROM part only needs 170 k.
3.6
High Drive Outputs
On request the ROM parts offer a high current output selection. These pins than are twice as
strong as in the standard configuration. The ATAM893-D does not offer this selection. Only the
Timer 2 output (BP42) and the Timer 3 output (BP60) are configured as high current outputs for
the low side driver by default. This configuration is fixed and cannot be changed by the
customer.
4.
MARC4 Architecture
4.1
General Description
The MARC4 microcontroller consists of an advanced stack-based, 4-bit CPU core and on-chip
peripherals. The CPU is based on the Harvard architecture with physically separate program
memory (ROM) and data memory (RAM). Three independent buses, the instruction bus, the
memory bus and the I/O bus, are used for parallel communication between ROM, RAM and
peripherals. This enhances program execution speed by allowing both instruction prefetching,
and a simultaneous communication to the on-chip peripheral circuitry. The extremely powerful
integrated interrupt controller with associated eight prioritized interrupt levels supports fast and
efficient processing of hardware events. The MARC4 is designed for the high-level programming
language qFORTH. The core includes both, an expression and a return stack. This architecture
enables high-level language programming without any loss of efficiency or code density.
Figure 4-1.
MARC4 Core
Instruction
decoder
CCR
TOS
ALU
RAM
RP
X
Y
Program
256 x 4-bit
MARC4 CORE
Clock
Reset
Sleep
Memory bus
I/O bus
Instruction
bus
Reset
System
clock
Interrupt
controller
On-chip peripheral modules
memory
SP
PC
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ATAM893T-TKSYD 功能描述:4位微控制器 - MCU Marc4 micrium 4k FLASH RoHS:否 最大时钟频率:32 KHz/4 MHz 程序存储器大小:4 KB 封装 / 箱体:SSO-20 制造商:Atmel 核心:MARC4 数据总线宽度:4 bit 安装风格:SMD/SMT
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