ATAM862P-TNQY8D Atmel, ATAM862P-TNQY8D Datasheet - Page 15
![IC MCU FLASH 4K TX 868MHZ 24SSOP](/photos/6/76/67636/453-24-ssop_sml.jpg)
ATAM862P-TNQY8D
Manufacturer Part Number
ATAM862P-TNQY8D
Description
IC MCU FLASH 4K TX 868MHZ 24SSOP
Manufacturer
Atmel
Datasheet
1.ATAM862P-TNQY8D.pdf
(110 pages)
Specifications of ATAM862P-TNQY8D
Applications
UHF ASK/FSK
Core Processor
MARC4
Program Memory Type
FLASH (4 kB)
Controller Series
MARC4 4-Bit
Ram Size
256 x 4
Interface
SSI
Number Of I /o
11
Voltage - Supply
1.8 V ~ 4 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-SSOP
Processor Series
ATAM862x
Core
MARC4
Data Bus Width
4 bit
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15. MARC4 Architecture General Description
16. Components of Microcontroller Core
4590G–4BMCU–06/07
The microcontroller consists of an advanced stack-based, 4-bit CPU core and on-chip peripher-
als. The CPU is based on the Harvard architecture with physically separated 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 simulta-
neous 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 microcontroller 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 15-1. Microcontroller Core
The core contains ROM, RAM, ALU, program counter, RAM address registers, instruction
decoder and interrupt controller. The following sections describe each functional block in more
detail.
System
Reset
clock
Clock
Sleep
Reset
Program
memory
Instruction
controller
Interrupt
decoder
Instruction
bus
I/O bus
On-chip peripheral modules
MARC4 CORE
PC
Memory bus
CCR
SP
RP
X
Y
TOS
ALU
ATAM862-8
256 x 4-bit
RAM
15
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