FMS7401LEN Fairchild Semiconductor, FMS7401LEN Datasheet - Page 46
![IC CTRLR POWER DGTL EEPROM 8DIP](/photos/6/76/67632/fms7401len_sml.jpg)
FMS7401LEN
Manufacturer Part Number
FMS7401LEN
Description
IC CTRLR POWER DGTL EEPROM 8DIP
Manufacturer
Fairchild Semiconductor
Datasheet
1.FMS7401LVN.pdf
(81 pages)
Specifications of FMS7401LEN
Applications
Digital Power Controller
Core Processor
8-Bit
Program Memory Type
EEPROM (1 kB)
Ram Size
64 x 8
Number Of I /o
6
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Controller Series
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
FMS7401LEN_NL
FMS7401LEN_NL
FMS7401LEN_NL
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
FMS7401LEN14
Manufacturer:
Rohm
Quantity:
21 626
10 8-Bit Microcontroller Core
The FMS7401L’s 8-bit microcontroller core is specifically designed for low cost applications involving bit manipulation, shift-
ing and block encryption. It is based on a modified Harvard architecture meaning peripheral, I/O and RAM locations are
addressed separately from instruction data.
The core differs from the traditional Harvard architecture by aligning the data and instruction memory sequentially. This
allows the X-pointer (11-bits) to point to any memory location in either segment of the memory map. This modification
improves the overall code efficiency of the microcontroller core and takes advantage of the flexibility found on the von Neu-
mann architecture and stored program concept.
10.1 Core Registers
The microcontroller core has five general-purpose registers. These registers are the Accumulator (A), X-Pointer (X), Program
Counter (PC), Stack Pointer (SP) and Status Register (SR). The X, SP and SR registers are memory mapped while A and PC
are not.
REV. 1.0.3 1/24/05
PRODUCT SPECIFICATION
A
X
PC
SP
SR
10
9
R
7
0 0
Figure 16. Core Program Model
G
Z
C
3
H
N
0
0
0
0
8-bit accumulator register
11-bit X pointer register
10-bit program counter
4-bit stack pointer
8-bit status register
NEGATIVE flag
HALF CARRY flag
CARRY flag
ZERO flag
GLOBAL INTERRUPT enable
READY flag
FMS7401L
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