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VRS51L540 の電気的特性と機能

VRS51L540のメーカーはRamtronです、この部品の機能は「Versa 8051 MCU」です。


製品の詳細 ( Datasheet PDF )

部品番号 VRS51L540
部品説明 Versa 8051 MCU
メーカ Ramtron
ロゴ Ramtron ロゴ 




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VRS51L540 Datasheet, VRS51L540 PDF,ピン配置, 機能
www.DataSheet4U.com
VRS51x540
Datasheet
Rev 1.2
Versa 8051 MCU with 4KB Flash
Overview
The VRS51x540 is a low cost 8-bit microcontroller
based on the standard 80C51 microcontroller family
architecture. It is pin compatible and is a drop-in
replacement for standard 8051 MCUs
Aimed at cost effective applications requiring small
amounts of program/data memory coupled with
streamlined peripheral support, the VRS51x540 includes
4KB of Flash memory, 128 bytes of RAM a UART, three
16-bit timers, a Watchdog timer and power down
features.
The VRS51x540 is available in 5 (VRS51C540) and 3.3
(VRS51L540) volt versions in PLCC-44, QFP-44 and
DIP-40 packages. The VRS51x540 devices operate
over the entire industrial temperature range. The Flash
memory can be programmed using programmers
available from Ramtron or other 3rd party commercial
programmers.
FIGURE 1: VRS51X540 FUNCTIONAL DIAGRAM
Feature Set
80C51/80C52 pin compatible
12 clock periods per machine cycle
4KB on-chip Flash memory
128 bytes on-chip data RAM
32 I/O lines: P0-P3 = 8-bit
Full duplex serial port (UART)
3, 16-bit Timers/Counters
Watchdog Timer
8-bit Unsigned Division / Multiply
BCD arithmetic
Direct and Indirect Addressing
Two levels of interrupt priority and nested interrupts
Power saving modes
Code protection function
Operates at a clock frequency of up to 40MHz
Low EMI (inhibit ALE)
Programming voltage: 12V
Industrial Temperature range (-40°C to +85°C)
5V and 3V versions available (see ordering information.)
FIGURE 2: VRS51X540 PLCC AND QFP PINOUT DIAGRAMS
4KB
FLASH
128 Bytes of
RAM
8051
PROCESSOR
ADDRESS/
DATA BUS
PORT 0
PORT 1
UART
PORT 2
2 INTERRUPT
INPUTS
TIMER 0
TIMER 1
TIMER 2
RESET
POWER
CONTROL
WATCHDOG
TIMER
PORT 3
8
8
8
8
6 40
P1.5
7
1
39 P0.4/AD4
P1.6
P0.5/AD5
P1.7
P0.6/AD6
RESET
P0.7/AD7
RXD/P3.0
NC
TXD/P3.1
VRS51x540
PLCC -4 4
#EA
NC
ALE
#INT0/P3.2
#PSEN
#INT1/P3.3
P2.7/A15
T0/P3.4
P2.6/A14
T1/P3.5
17
18
29
28
P2.5/A13
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
VDD
NC
T2/P1.0
T2EX/P1.1
P1.2
P1.3
P1.4
32
3 3 32
42
VRS51x540
QFP-44
41
41
12
1
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P2.0/A8
NC
VSS
XTAL1
XTAL2
#RD/P3.7
#WR/P3.6
Ramtron International Corporation ? http://www.ramtron.com
1850 Ramtron Drive Colorado Springs ? MCU customer service: 1-800-943-4625, 1-514-871-2447, ext. 208
Colorado, USA, 80921 ? 1-800-545-FRAM, 1-719-481-7000
page 1 of 40

1 Page





VRS51L540 pdf, ピン配列
VRS51x540
Pin Descriptions for PLCC-44
TABLE 2: PIN DESCRIPTIONS FOR PLCC-44
PLCC
- 44
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Name
NC
T2
P1.0
T2EX
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RES
RXD
P3.0
NC
TXD
P3.1
#INT0
P3.2
#INT1
P3.3
T0
P3.4
T1
P3.5
#WR
P3.6
#RD
P3.7
XTAL2
XTAL1
VSS
NC
I/O Function
- No Connect
I Timer 2 Clock Out
I/O Bit 0 of Port 1
I Timer 2 Control
I/O Bit 1 of Port 1
I/O Bit 2 of Port 1
I/O Bit 3 of Port 1
I/O Bit 4 of Port 1
I/O Bit 5 of Port 1
I/O Bit 6 of Port 1
I/O Bit 7 of Port 1
I Reset
I Receive Data
I/O Bit 0 of Port 3
- No Connect
O Transmit Data &
I/O Bit 1 of Port 3
I External Interrupt 0
I/O Bit 2 of Port 3
I External Interrupt 1
I/O Bit 3 of Port 3
I Timer 0
I/O Bit 4 of Port 3
I Timer 1 & 3
I/O Bit 5 of Port
O Ext. Memory Write
I/O Bit 6 of Port 3
O Ext. Memory Read
I/O Bit 7 of Port 3
O Oscillator/Crystal Output
I Oscillator/Crystal In
- Ground
- No Connect
PLCC
- 44
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Name
P2.0
A8
P2.1
A9
P2.2
A10
P2.3
A11
P2.4
A12
P2.5
A13
P2.6
A14
P2.7
A15
#PSEN
ALE
NC
#EA
P0.7
AD7
P0.6
AD6
P0.5
AD5
P0.4
AD4
P0.3
AD3
P0.2
AD2
P0. 1
AD1
P0.0
AD0
VDD
I/O Function
I/O Bit 0 of Port 2
O Bit 8 of External Memory Address
I/O Bit 1 of Port 2
O Bit 9 of External Memory Address
I/O Bit 2 of Port 2
O Bit 10 of External Memory Address
I/O Bit 3 of Port 2 &
O Bit 11 of External Memory Address
I/O Bit 4 of Port 2
O Bit 12 of External Memory Address
I/O Bit 5 of Port 2
O Bit 13 of External Memory Address
I/O Bit 6 of Port 2
O Bit 14 of External Memory Address
I/O Bit 7 of Port 2
O Bit 15 of External Memory Address
O Program Store Enable
O Address Latch Enable
- No Connect
I External Access
I/O Bit 7 Of Port 0
I/O
Data/Address Bit 7 of External
Memory
I/O Bit 6 of Port 0
I/O
Data/Address Bit 6 of External
Memory
I/O Bit 5 of Port 0
I/O
Data/Address Bit 5 of External
Memory
I/O Bit 4 of Port 0
I/O
Data/Address Bit 4 of External
Memory
I/O Bit 3 Of Port 0
I/O
Data/Address Bit 3 of External
Memory
I/O Bit 2 of Port 0
I/O
Data/Address Bit 2 of External
Memory
I/O Bit 1 of Port 0 & Data
I/O Address Bit 1 of External Memory
I/O Bit 0 Of Port 0 & Data
I/O Address Bit 0 of External Memory
- VCC
P1.5
P1.6
P1.7
RESET
RXD/P3.0
NC
TXD /P 3 .1
#INT0/P3.2
#INT1/P3.3
T0/P3.4
T1/P3.5
6
7
17
18
40
1 39
VRS51x540
PLCC-44
29
28
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
#EA
NC
ALE
#PSEN
P2.7/A15
P2.6/A14
P2.5/A13
________________________________________________________________________________________________
www.ramtron.com
page 3 of 40


3Pages


VRS51L540 電子部品, 半導体
VRS51x540
Special Function Registers (SFR)
Addresses 80h to FFh of the SFR address space can be accessed in direct addressing mode only. The following table
lists the VRS51x540 Special Function Registers.
TABLE 6: SPECIAL FUNCTION REGISTERS (SFR)
SFR
Register
SFR
Adrs
Bit 7
P0 80h -
SP 81h -
DPL 82h -
DPH
83h -
Reserved
84h
-
PCON
87h SMOD
TCON
88h TF1
TMOD
89h GATE1
TL0 8Ah -
TL1 8Bh -
TH0 8Ch -
TH1 8Dh -
P1 90h -
SCON
98h SM0
SBUF
99h -
WDTCON
9Fh
WDTE
P2 A0h -
IE A8h EA
P3 B0h -
IP B8h -
SYSCON
BFh WDRESET
T2CON C8h TF2
RCAP2L
CAh
-
RCAP2H
CBh
-
TL2
CCh
-
TH2 CDh
PSW
D0h CY
ACC
E0h -
B F0h -
Bit 6
-
-
-
-
-
-
TR1
C/T1
-
-
-
-
-
SM1
-
-
-
-
-
-
-
EXF2
-
-
-
AC
-
-
Bit 5
-
-
-
-
-
-
TF0
M1.1
-
-
-
-
-
SM2
-
WDCLR
-
ET2
-
PT2
-
RCLK
-
-
-
F0
-
-
Bit 4
-
-
-
-
-
-
TR0
M0.1
-
-
-
-
-
REN
-
-
-
ES
-
PS
-
TCLK
-
-
-
RS1
-
-
Bit 3
-
-
-
-
-
GF1
IE1
GATE0
-
-
-
-
-
TB8
-
-
-
ET1
-
PT1
-
EXEN2
-
-
-
RS0
-
-
Bit 2
-
-
-
-
-
GF0
IT1
C/T0
-
-
-
-
-
RB8
-
WDPS2
-
EX1
-
PX1
TR2
-
-
-
OV
-
-
Bit 1
-
-
-
-
-
PDOWN
IE0
M1.0
-
-
-
-
-
TI
-
WDPS1
-
ET0
-
PT0
C/T2
-
-
-
-
-
-
Bit 0
-
-
-
-
-
IDLE
IT0
M0.0
-
-
-
-
-
RI
-
WDPS0
-
EX0
-
PX0
ALEI
CP/RL2
-
-
-
P
-
-
Reset Value
00000000b
00000000b
00000000b
00000000b
0*0**000b
00000000b
00000000b
0*****00b
00000000b
00000000b
00000000b
00000000b
00000000b
00000000b
______________________________________________________________________________________________
www.ramtron.com
page 6 of 40

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部品番号部品説明メーカ
VRS51L540

Versa 8051 MCU

Ramtron
Ramtron


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