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PDF VMX1C1020 Data sheet ( Hoja de datos )
| Número de pieza | VMX1C1020 | |
| Descripción | Versa Mix 8051 Mixed-Signal MCU | |
| Fabricantes | Ramtron | |
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VMX1C1020
Datasheet
Rev 2.12
Versa Mix 8051 Mixed-Signal MCU
Overview
The VMX51C1020 is a fully integrated mixed-signal
microcontroller that provides a “one-chip solution” for
a broad range of signal conditioning, data acquisition,
processing, and control applications.
The
VMX51C1020 is based on a powerful single-cycle,
RISC-based, 8051 microprocessor with an enhanced
MULT/ACCU unit that can be used to perform
complex mathematical operations.
On-chip analog peripherals such as: an A/D
converter, PWM outputs (that can be used as D/A
converters), a voltage reference, a programmable
current source, an uncommitted operational amplifier,
digital potentiometers and an analog switch makes
the VMX51C1020 ideal for analog data acquisition
applications.
The inclusion of a full set of digital interfaces such as
an enhanced fully configurable SPI, an I2C interface,
UARTs and a J1708/RS-485/RS-422 compatible
differential transceiver, enables total system
integration.
Applications
o Automotive Applications
o Industrial Controls / Instrumentation
o Consumer Products
o Intelligent Sensors
o Medical Devices
FIGURE 1: VMX51C1020 BLOCK DIAGRAM
8051
µPROCESSOR
SINGLE CYCLE
Programmable
Current Source
In-Circuit
Debugging
through UART0
2 UARTs
Serial Ports
12-BIT A/D
CONVERTER
XTVREF Input
ISRCIN, ISRCOUT, OPOUT are
internally connected to A /D Input
Multiplexer
Band gap
Reference
PGA
4 8P/ 41W64PMbiW4tPROWPeMsuWoMtlDupMtiuD/oAntD/ssA/sA s
(C a n b e u s e d a s D /A s)
Operational
Amplifier
1 DIGITALLY
CONTROLLED
SWITCH
2 DIGITAL
POTENTIOMETERS
56KB
Program FLASH
( In-Circuit Programmable )
1280 Bytes RAM
(256x 8 & 1k X8)
· 2 Interrupt inputs
· 28 I/O s,
· Interrupt on
Port1 change
· 3 Timers,
· 2 Baud Rate
Generators
· 4 CCU units
[M U L T / A C C U]
Unit with
BARREL
SHIFTER
SPI Interface
XTAL
J1708 /R S 485/
RS422
Compatible
Transceiver
Clock Control Unit
I²C Bus
Interface
Power On Reset
Circuit
+
WatchDog Timer
Feature Set
o 8051 Compatible RISC performance Processor.
o Integrated Debugger
o 56KB Flash Program Memory
o 1280 Bytes of RAM
o MULT/ACCU unit including a Barrel Shifter
o Provides DSP capabilities
o 2 UART Serial Ports
o 2 Baud Rate Generators for UARTs
o Differential Transceiver connected to UART1
J1708/RS-485/RS-422 compatible.
o Enhanced SPI interface (Master/Slave)
o Fully Configurable
o Controls up to 4 slave devices
o I2C interface
o 28 General Purpose I/Os
o 2 External Interrupt Inputs
o Interrupt on Port 1 pin change
o 3, 16-bit Timers/Counters
o 4 Compare & Capture Units with 3 Capture Inputs
o 4 PWM outputs, 8-bit / 16-bit resolution
o 4 ext. + 3 int. Channel 12-bit A/D Converter
o Conversion rate up to 10kHz
o 0-2.7 Volt Input range Continuous /
One-Shot operation
o Single or 4-channel automatic
sequential conversions
o On-Chip Voltage Reference
o Programmable Current Source
o Operational Amplifier
o 2 Digital Potentiometers
o 1 Digitally Controlled Switch
o Power Saving Features + Clock Control
o Power-on Reset with Brown-Out Detect
o Watchdog Timer
FIGURE 2: VMX51C1020 QFP-64 PACKAGE PINOUT
AGND
4
8
49
33
32 P1.5
INT0
P1.4
PM VDD
RES-
P2.7 – SDI
ISRCOUT – TA
P2.6 – SDO
ISRCIN
P2.5 – SCK
POT2A
P2.4 – SS-
POT2B
VDDA
VMX51C1020
P2.3 – CS0-
P2.2 – CS1-
ADCI3
P2.1 – CS2-
ADCI2
P2.0 – CS3-
ADCI1
DGND
ADCI0
INT1
XTVREF
CCU2
AGND
P1.3 PWM3
OPOUT
64
1
17 P1.2 PWM2
16
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
1 page  
VMX51C1020
ANALOG INPUTS
ADCI(0-3) Input Voltage Range
ADCI(0-3) Input Resistance
ADCI(0-3) Input Capacitance
ADCI(0-3) Input Leakage
Current
Channel-to-Channel Crosstalk
VADCI
RADCI
CADCI
IADCI
0 2.7 V
100 Mohms (design)
7 pF
TBD
nA
-72 dB (design)
(12 bit)
ANALOG OUTPUT
TA Output Drive Capabilities
(Maximum Load Resistance)
VTA=VADCI(0-3)
Others
Requires buffering
10
CURRENT SOURCE
ISRC Current Drive REFISRC200
IISRC200
ISRC Current Drive REFISRC800
IISRC800
ISRC Feedback voltage 200mV REFISRC200
195
ISRC Feedback voltage 800mV REFISRC800
799
ISRC Output Resistance
RISRC
ISRC Output Capacitance
CISRC
ISRCIN Input Reference
Resistance
RRESIN
ISRCIN Input Reference
Capacitance
CRESIN
ISRC stability
Drift
Allowable sensor capacitance
between ISRCIN & ISRCOUT
Allowable capacitance between
ISRCOUT & GND
INTERNAL REFERENCE
Bandgap Reference Voltage
1.18
Bandgap Reference Tempco
EXTERNAL REFERENCE
Input Impedance
RXTVREF
PGA
PGA Gain adjustment
2.11
ANALOG TO DIGITAL CONVERTER
External Reference, TA=25C, Fosc = 14.75MHz
ADC Resolution
Differential Non linearity
DNL
Integral Non linearity
INL
-1
Full-Scale Error (Gain Error)
All channels, ADCI(0-3)
Offset Error
All channels, ADCI(0-3)
Channel-to-Channel Mismatch
All channels, ADCI(0-3)
Sampling Rate
Single Channel
1
4 Channels
1
UART1 DIFFERENTIAL TRANSCEIVER COMPATIBLE TO J1708/ RS-485/RS-422
Common mode Input Voltage
Input Impedance
VcI
ZIN
-2
Output Drive Current
Differential Input
25M
33
133
50
25
100
7
1.23V
100
150
12
±4
±1
±1
1
30
100mV
kOhms
66 µA (design)
500 µA
205 mV
803 mV
MOhms
pF
Mohms
pF
2.5
1000
%
PF
100 pF
1.28 V
ppm/°C
kOhms
2.29
±1.5
+4
10k
2.5k
Bits
LSB
LSB
LSB
LSB
LSB
Hz
+7 V
MOhms
mA
mV
_________________________________________________________________________________________________________
www.ramtron.com
page 5 of 80
5 Page 
VMX51C1020
SFR Register
SFR
Adrs
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset Value
DIGPOT2
BBh -
-
-
-
-
-
-
- 0000 0000b
ISRCCAL1
BCh PGACAL0 ISRCCAL1_6 ISRCCAL1_5 ISRCCAL1_4 ISRCCAL1_3 ISRCCAL1_2 ISRCCAL1_1 ISRCCAL1_0 Cal. Vector
ISRCCAL2 BDh - ISRCCAL2_6 ISRCCAL2_5 ISRCCAL2_4 ISRCCAL2_3 ISRCCAL2_2 ISRCCAL2_1 ISRCCAL2_0 Cal. Vector
S1RELL
BEh -
-
-
-
-
-
-
- 0000 0000b
S1RELH
BFh -
-
-
-
-
-
-
- 0000 0000b
S1CON*
C0h S1M
reserved MPCE1
R1EN
T1B8
R1B8
T1I
R1I 0000 0000b
S1BUF
C1h -
-
-
-
-
-
-
- 0000 0000b
CCL1 C2h - - - - - - - - 0000 0000b
CCH1 C3h - - - - - - - - 0000 0000b
CCL2 C4h - - - - - - - - 0000 0000b
CCH2 C5h - - - - - - - - 0000 0000b
CCL3 C6h - - - - - - - - 0000 0000b
CCH3 C7h - - - - - - - - 0000 0000b
T2CON*
C8h T2PS
T2PSM
T2SIZE
T2RM1
T2RM0
T2CM
T2IN1
T2IN0
0000 0000b
CCEN
C9h COCAH3 COCAL3 COCAH2 COCAL2 COCAH1 COCAL1 COCAH0 COCAL0 0000 0000b
CRCL
CAh
-
-
-
-
-
-
-
- 0000 0000b
CRCH
CBh
-
-
-
-
-
-
-
- 0000 0000b
TL2
CCh
-
-
-
-
-
-
-
- 0000 0000b
TH2
CDh
-
-
-
-
-
-
-
- 0000 0000b
Reserved
CEh
MPAGE
CFh -
-
-
-
-
-
-
- 0000 0000b
PSW*
D0h CY
AC
F0
RS1
RS0
OV reserved
P 0000 0001b
Reserved
D1h
D1h-D4h =FFh
To D5h-D7h = 00h
D7
U0BAUD
D8h BAUDSRC
-
-
-
-
-
-
- 0000 0000b
WDTREL
D9h PRES WDTREL_6 WDTREL_5 WDTREL_4 WDTREL_3 WDTREL_2 WDTREL_1 WDTREL_0 0000 0000b
I2CCONFIG
DAh I2CMASKID I2CRXOVIE I2CRXDAVIE I2CTXEMPIE I2CMANACK I2CACKMODE I2CMSTOP I2CMASTER 0000 0010b
I2CCLKCTRL DBh
-
-
-
-
-
-
-
- 0000 0000b
I2CCHIPID
DCh I2CID_6 I2CID_5 I2CID_4 I2CID_3 I2CID_2 I2CID_1 I2CID_0 I2CWID 0100 0010b
I2CIRQSTAT
DDh I2CGOTSTOP I2CNOACK I2CSDA I2CDATACK I2CIDLE I2CRXOV I2CRXAV I2CTXEMP 0010 1001b
I2CRXTX
DEh
-
-
-
-
-
-
-
- 0000 0000b
Reserved
DFh
0000 0000b
ACC*
E0h - - - - - - - - 1110 0000b
SPIRX3TX0
E1h
-
-
-
-
-
-
-
- 0000 0000b
SPIRX2TX1
E2h
-
-
-
-
-
-
-
- 0000 0000b
SPIRX1TX2
E3h
-
-
-
-
-
-
-
- 0000 0000b
SPIRX0TX3
E4h
-
-
-
-
-
-
-
- 0000 0000b
SPICTRL
E5h SPICK_2 SPICK_1 SPICK_0 SPICS_1 SPICS_0 SPICKPH SPICKPOL SPIMA_SL 0000 0001b
SPICONFIG
E6h SPICSLO
- FSONCS3 SPI LOAD - SPIRXOVIE SPIRXAVIE SPITXEMPIE 0000 0000b
SPISIZE
E7h -
0000 0111b
IEN1*
E8h T2EXIE
SWDT ADCPCIE MACOVIE I2CIE SPIRXOVIE SPITEIE reserved 0000 0000b
SPIIRQSTAT
E9h
-
-
SPITXEMPTO SPISLAVESEL SPISEL
SPIOV SPIRXAV SPITXEMP 00011001b
Reserved
EAh
0000 0000b
MACCTRL1
EBh LOADPREV PREVMODE OVMODE OVRDVAL ADDSRC_1 ADDSRC_0 MULCMD_1 MULCMD_0 0000 0000b
MACC0
ECh
-
-
-
-
-
-
-
- 0000 0000b
MACC1
EDh
-
-
-
-
-
-
-
- 0000 0000b
MACC2
EEh -
-
-
-
-
-
-
- 0000 0000b
MACC3
EFh -
-
-
-
-
-
-
- 0000 0000b
B* F0h - - - - - - - - 0000 0000b
MACCTRL2
F1h MACCLR2_2 MACCLR2_1 MACCLR2_0 MACOV32IE
-
- MACOV16 MACOV32 0000 0000b
MACA0
F2h -
-
-
-
-
-
-
- 0000 0000b
MACA1
F3h -
-
-
-
-
-
-
- 0000 0000b
MACRES0 F4h - - - - - - - - 0000 0000b
MACRES1 F5h - - - - - - - - 0000 0000b
MACRES2 F6h - - - - - - - - 0000 0000b
MACRES3 F7h - - - - - - - - 0000 0000b
USERFLAGS* F8h
UF7
UF6
UF5
UF4
UF3
UF2
UF1
UF0 0000 0000b
MACB0
F9h -
-
-
-
-
-
-
- 0000 0000b
MACB1
FAh -
-
-
-
-
-
-
- 0000 0000b
MACSHIFTCTRL FBh SHIFTMODE ALSHSTYLE SHIFTAMPL_5 SHIFTAMPL_4 SHIFTAMPL_3 SHIFTAMPL_2 SHIFTAMPL_1 SHIFTAMPL_0 0000 0000b
MACPREV0
FCh
-
-
-
-
-
-
-
- 0000 0000b
MACPREV1
FDh
-
-
-
-
-
-
-
- 0000 0000b
MACPREV2
FEh
-
-
-
-
-
-
-
- 0000 0000b
MACPREV3
FFh
-
-
-
-
-
-
-
- 0000 0000b
* Bit addressable
_________________________________________________________________________________________________
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