XE8802MI035LF Semtech, XE8802MI035LF Datasheet - Page 23
![IC DAS 16BIT FLASH 8K 100-LQFP](/photos/6/76/67635/xe8802mi035lf_sml.jpg)
XE8802MI035LF
Manufacturer Part Number
XE8802MI035LF
Description
IC DAS 16BIT FLASH 8K 100-LQFP
Manufacturer
Semtech
Datasheet
1.XE8802MI035LF.pdf
(193 pages)
Specifications of XE8802MI035LF
Applications
Sensing Machine
Core Processor
RISC
Program Memory Type
FLASH (22 kB)
Controller Series
XE8000
Ram Size
1K x 8
Interface
SPI, UART
Number Of I /o
36
Voltage - Supply
2.4 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
For Use With
XE8000MP - PROG BOARD AND PROSTART2 CARD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
XE8802MI035LF
Manufacturer:
TI
Quantity:
8 700
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- Download datasheet (2Mb)
3.1
The CPU of the XE8000 series is a low power RISC core. It has 16 internal registers for efficient implementation of
the C compiler. Its instruction set is made up of 35 generic instructions, all coded on 22 bits, with 8 addressing
modes. All instructions are executed in one clock cycle, including conditional jumps and 8x8 multiplication. The
circuit therefore runs on 1 MIPS on a 1MHz clock.
The CPU hardware and software description is given in the document “Coolrisc816 Hardware and Software
Reference Manual”. A short summary is given in the following paragraphs.
The
compiler, all numbers are signed integers on 16 bits).
3.2
As shown in Figure 3-1, the CPU has 16 internal 8-bit registers. Some of these registers can be concatenated to a
16-bit word for use in some instructions. The function of these registers is defined in Table 3-1. The status register
stat (Table 3-2) is used to manage the different interrupt and event levels. An interrupt or an event can both be
used to wake up after a HALT instruction. The difference is that an interrupt jumps to a special interrupt function
whereas an event continues the software execution with the instruction following the HALT instruction.
The program counter (PC) is a 16 bit register that indicates the address of the instruction that has to be executed.
The stack (ST
Figure 3-1. CPU internal registers
© Semtech 2006
Z
=
Instruction
(
good
A
memory
CPU description
0
CPU internal registers
22bit
+
A
1
code efficiency of the CPU
n
⋅
) is used to memorise the return address when executing subroutines or interrupt routines.
Y
)
⋅
X
+
B
0
+
B
1
⋅
Y
in less than 300 clock cycles (software code generated by the XEMICS C-
program counter stack
stat
i0h
i1h
i2h
i3h
iph
r0
r1
r2
r3
XE8802 Sensing Machine Data Acquisition MCU
a
CPU
core makes it possible to compute
i0l
i1l
i2l
i3l
ipl
3-2
with ZoomingADC™ and LCD driver
Data memory
a polynomial like
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