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VRS51C570 데이터시트 PDF




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부품번호 VRS51C570 기능
기능 (VRS51X570 / VRS51X580) Versa 8051 MCUs
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VRS51C570 데이터시트, 핀배열, 회로
www.DataSheet4U.com
VRS51x570/580
Datasheet
Rev 1.2
Versa 8051 MCUs with 32/64KB
Overview
The VRS51x570 and the VRS51x580 are low cost 8-bit
microcontrollers based on the standard 80C51
microcontroller family architecture. They are pin
compatible and drop-in replacements for most 8051
MCUs.
Ideal for a wide range of applications requiring large
amounts of program/data memory, coupled with
comprehensive peripheral support, the VRS51x570/580
devices include 32KB/64KB of Flash memory,
respectively, and 1KB of SRAM, 5 PWM output
channels, a UART, three 16-bit timers, a Watch Dog
timer and power down features.
These devices also include a fifth, 4-bit, I/O port mapped
into the “no connect” pins of the standard 8051/52
package. This provides a total of 36 I/Os while
maintaining compatibility with standard 80C51/52 pin
outs.
The VRS51x570 and VRS51x580 are available in
PLCC-44, QFP-44 and DIP-40 packages in the Industrial
temperature range. The Flash memory can be
programmed using programmers from Ramtron or other
3rd party commercial programmer suppliers.
FIGURE 1: VRS51X570 / VRS51X580 FUNCTIONAL DIAGRAM
64KB
FLASH
1024 Bytes of
RAM
UART
2 INTERRUPT
INPUTS
TIMER 0
TIMER 1
TIMER 2
RESET
8051
PROCESSOR
ADDRESS/
DATA BUS
PORT 0
PORT 1
PORT 2
PORT 3
POWER
CONTROL
WATCHDOG
TIMER
PORT 4
PWM
8
8
8
8
4
5
Feature Set
80C51/80C52 pin compatible
12 clock periods per machine cycle
32KB / 64KB on-chip Flash memory
1024 Bytes on-chip data RAM
36 I/O lines: P0-P3 = 8-bit, P4 = 4-bit
5-Channel PWM on P1.3 to P1.7
Full duplex serial port (UART)
Three 16-bit Timers/Counters
Watch Dog 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: VRS51X570 / VRS51X580 PLCC AND QFP PINOUT DIAGRAMS
PWM2/P1.5
PWM3/P1.6
PWM4/P1.7
RESET
RXD/P3.0
P4.3
TXD/P3.1
#INT0/P3.2
#INT1/P3.3
T0/P3.4
T1/P3.5
6
7
1
40
39
VRS51x570/580
PLCC -4 4
17 29
18 28
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
#EA
P4.1
ALE
#PSEN
P2.7/A15
P2.6/A14
P2.5/A13
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
VDD
P4.2
T2/P1.0
T2EX/P1.1
P1.2
PWM0/P1.3
PWM1/P1.4
33
34
23
22
VRS51x570/580
QFP-44
44 12
1 11
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P2.0/A8
P4.0
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 49




VRS51C570 pdf, 반도체, 판매, 대치품
VRS51x570/580
VRS51x570 – VRS51x580 DIP40 Pin
Descriptions
TABLE 3: VRS51X570 – VRS51X580 PIN DESCRIPTIONS FOR DIP40 PACKAGE
DIP40
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
T2
P1.0
T2EX
P1.1
P1.2
PWM0
P1.3
PWM1
P1.4
PWM2
P1.5
PWM3
P1.6
PWM4
P1.7
RESET
RXD
P3.0
TXD
P3.1
#INT0
P3.2
#INT1
P3.3
T0
P3.4
T1
P3.5
#WR
P3.6
#RD
P3.7
XTAL2
XTAL1
VSS
I/O Function
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
O PWM Channel 0
I/O Bit 3 of Port 1
O PWM Channel 1
I/O Bit 4 of Port 1
O PWM Channel 2
I/O Bit 5 of Port 1
O PWM Channel 3
I/O Bit 6 of Port 1
O PWM Channel 4
I/O Bit 7 of Port 1
I Reset
I Receive Data
I/O Bit 0 of Port 3
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
T2 / P1.0
T2EX / P1.1
P1.2
PWM0 / P1.3
PWM1 / P1.4
PWM2 / P1.5
PWM3 / P1.6
PWM4 / P1.7
RESET
RXD / P3.0
TXD / P3.1
#INT0 / P3.2
#INT1 / P3.3
T0 / P3.4
T1 / P3.5
#WR / P3.6
#RD / P3.7
XTAL2
XTAL1
VSS
1 40
2 39
3 38
4 37
5 36
6 35
7 34
8 33
9 VRS51x570 32
10 VRS51x580 31
11 DIP-40 30
12 29
13 28
14 27
15 26
16 25
17 24
18 23
19 22
20 21
VDD
P0.0 / AD0
P0.1 / AD1
P0.2 / AD2
P0.3 / AD3
P0.4 / AD4
P0.5 / AD5
P0.6 / AD6
P0.7 / AD7
#EA / VPP
ALE
PSEN
P2.7 / A15
P2.6 / A14
P2.5 / A13
P2.4 / A12
P2.3 / A11
P2.2 / A10
P2.1 / A9
P2.0 / A8
DIP40
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
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
#EA /
VPP
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
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
O
O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
Function
Bit 0 of Port 2
Bit 8 of External Memory Address
Bit 1 of Port 2
Bit 9 of External Memory Address
Bit 2 of Port 2
Bit 10 of External Memory Address
Bit 3 of Port 2 &
Bit 11 of External Memory Address
Bit 4 of Port 2
Bit 12 of External Memory Address
Bit 5 of Port 2
Bit 13 of External Memory Address
Bit 6 of Port 2
Bit 14 of External Memory Address
Bit 7 of Port 2
Bit 15 of External Memory Address
Program Store Enable
Address Latch Enable
External Access
Flash programming voltage input
Bit 7 Of Port 0
Data/Address Bit 7 of External
Memory
Bit 6 of Port 0
Data/Address Bit 6 of External
Memory
Bit 5 of Port 0
Data/Address Bit 5 of External
Memory
Bit 4 of Port 0
Data/Address Bit 4 of External
Memory
Bit 3 Of Port 0
Data/Address Bit 3 of External
Memory
Bit 2 of Port 0
Data/Address Bit 2 of External
Memory
Bit 1 of Port 0 & Data
Address Bit 1 of External Memory
Bit 0 Of Port 0 & Data
Address Bit 0 of External Memory
Supply input
________________________________________________________________________________________________
www.ramtron.com
page 4 of 49

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VRS51C570 전자부품, 판매, 대치품
VRS51x570/580
Program Memory Structure
Program Memory
The VRS51x580 includes 64KB of on-chip Flash that
can be used as general program memory. The Flash
memory size of the VRS51x570 is 32KB.
FIGURE 3: VRS51X580 / VRS51X570 INTERNAL PROGRAM MEMORY
FFFFh
VRS580
Flash Memory
(64K Bytes)
0000h
7FFFh
0000h
VRS570
Flash Memory
(32K Bytes)
Program Status Word Register
The PSW register is a bit addressable that contains
the status flags (CY, AC, OV, P), user flag (F0) and
register bank select bits (RS1, RS0) of the 8051
processor.
TABLE 7: PROGRAM STATUS WORD REGISTER (PSW) - SFR DOH
76
CY AC
543
F0 RS1 RS0
2
OV
1
-
0
P
Bit Mnemonic Description
7 CY
Carry Bit
6 AC
Auxiliary Carry Bit from bit 3 to 4.
5 F0
User definer flag
4 RS1
R0-R7 Registers bank select bit 0
3 RS0
R0-R7 Registers bank select bit 1
2 OV
Overflow flag
1-
-
0P
Parity flag
RS1 RS0
00
01
10
11
Active Bank
0
1
2
3
Address
00h-07h
08h-0Fh
10h-17h
18-1Fh
Data Pointer
The VRS51x570 and VRS51x580 have one 16-bit data
pointer (DPTR). The DPTR is accessed via two SFR
addresses: DPL located at address 82h and DPH
located at address 83h.
Data Memory
The VRS51x580 and VRS51x570 have a total of 1KB of
on-chip RAM with a 256 byte subset of this block
mapped as the internal memory structure of a standard
8052. The remaining 768 byte sub-block can be
accessed using external memory addressing via MOVX
instruction.
FIGURE 4: VRS51X570 /VRS51X580 RAM MEMORY
02FF
FF
Upper 128 bytes
80 (Indirect addressing only)
7F Lower 128 bytes
(Can be accessed in indirect and
direct addressing mode)
00
SFR
(Direct addressing only)
Externally mapped
768 bytes RAM
(Can by accessed by
direct external addressing
mode, using the MOVX
instruction)
(XRAME=1)
0000
By default, after reset, the externally mapped block of
768 bytes of RAM is disabled and can be enabled by
setting the XRAME bit of the SYSCON register located
at address BFh in the SFR space.
Lower 128 bytes (00h to 7Fh, Bank 0 & Bank 1)
The lower 128 bytes of data memory (from 00h to 7Fh)
is summarized as follows:
Address range 00h to 7Fh can be accessed in
direct and indirect addressing modes.
Address range 00h to 1Fh includes R0-R7
registers area.
Address range 20h to 2Fh is bit addressable.
Address range 30h to 7Fh is not bit addressable
and can be used as general-purpose storage.
______________________________________________________________________________________________
www.ramtron.com
page 7 of 49

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VRS51C570

(VRS51X570 / VRS51X580) Versa 8051 MCUs

Ramtron
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