AT89C51CC03CA-SLRUM - 8-bit 8051 CAN MCU 64KB Flash 40MHz | Microchip
Référence : AT89C51CC03CA-SLRUM ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $11.9 | $11,90 |
| 10 | $10.71 | $107,10 |
| 100 | $9.52 | $952,00 |
| 500 | $8.57 | $4 285,00 |
| 1 000 | $7.62 | $7 620,00 |
AT89C51CC03CA-SLRUM Présentation
What is an 8051 CAN microcontroller? The 8051 is a CISC 8-bit microcontroller architecture originally introduced by Intel in 1980 and now maintained by NXP/Microchip/Atmel. A CAN-enabled variant integrates the Bosch CAN 2.0B controller on-chip, allowing the MCU to communicate on Controller Area Network bus lines without an external transceiver, while a small external CAN transceiver provides physical-layer signaling. Within the broader hierarchy, this part is a microcontroller > embedded controller > semiconductor IC. The 'CA' suffix denotes the 5V industrial variant; the 'SLRUM' suffix denotes the 44-PLCC package with industrial-grade operating temperature.
Key features include 36 programmable I/O lines, full-duplex enhanced UART, SPI, dual 16-bit timers, three-level program memory lock, 1000 write/erase cycle endurance, hardware watchdog timer, dual data pointers for faster XRAM access, and 8-channel 10-bit ADC. The integrated CAN controller with 15 message objects eliminates the need for a separate CAN peripheral. Power-on reset and brown-out detection are built in.
Architecturally, the device is built on a standard 8051 core enhanced with peripherals mapped into the SFR space. The 64KB code space is linear (no banking) and the 2KB EEPROM (HEF) is mapped into a dedicated data region with a small page buffer for write operations, allowing byte-level non-volatile storage without external EEPROM chips.
Typical applications include industrial CAN-bus nodes (sensor interfacing, HVAC controls), automotive body controllers (comfort modules, lighting controllers), motor control via CANopen or DeviceNet, building automation nodes, and embedded instrumentation. The integrated CAN and EEPROM make it particularly attractive for distributed industrial nodes that must store calibration data locally.
When designing with this part, allocate PCB area carefully: the PLCC-44 footprint is 16.6 mm square with J-leads, larger than QFP-44 alternatives. Decouple VCC with 100 nF + 10 µF close to the pins, and route the CANINT stack on a twisted pair with 120 Ω termination at each bus end. The boot-loader UART pins (RXD/TXD) must be accessible for ISP firmware updates.
This page synthesizes current distributor stock and pricing, parametric drop-in alternatives from the same 8051/CAN family, and practical design notes (PLCC-44 footprint, CAN bus termination, EEPROM endurance) not found in the standalone datasheet.
Alternatives de remplacement direct pour AT89C51CC03CA-SLRUM — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec AT89C51CC03CA-SLRUM (même facteur de forme et même empreinte) — différant par ADC, CAN Controller, I/O Lines, Maximum Clock Frequency, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
AT89C51CC03CA-SLSUM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AT89C51CC03UA-SLSUM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AT89C51CC03CA-RLTUM
✅ Remplacement direct✓ En stock
$5.45 / unité
Voir la fiche technique →AT89C51AC3-SLSUM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AT89C51RB2-SLSIL
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AT89C51ID2-SLSIM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AT89C51CC03CA-SLRUM Valeurs maximales et caractéristiques électriques
| Core Architecture | 8051 (8-bit CISC) |
| Program Memory Type | Flash (In-System Programmable) |
| Program Memory Size | 64 KB |
| Boot Flash Memory | 2 KB |
| Data EEPROM / HEF | 2 KB |
| Internal SRAM | 2 KB (256 x 8) |
| Fréquence d'horloge maximale | 40 MHz |
| CPU Speed (MIPS) | 6.66 MIPS (X2 mode doubles per-clock throughput) |
| Instruction Cycle Time | 300 ns (X2 mode at 20 MHz external clock) |
| Operating Voltage | 3 V to 5.5 V |
| Plage de température de fonctionnement | -40 C to +85 C (industrial) |
| I/O Lines | 36 programmable I/O |
| CAN Controller | Full CAN 2.0B, 15 message objects |
| ADC | 8-channel, 10-bit |
| Timers | 2 x 16-bit |
| Serial Interfaces | Enhanced UART, SPI |
| Watchdog Timer | Yes (hardware) |
| Data Pointers | Dual (XRAM fast access) |
| Program Lock | 3-level |
| Flash Endurance | 1,000 write/erase cycles |
| Boîtier | 44-pin PLCC (16.6 x 16.6 mm) J-lead |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de AT89C51CC03CA-SLRUM
| Broche 1 | P1.0/T2 — Port 1.0 / Timer 2 external input |
| Broche 2 | P1.1/T2EX — Port 1.1 / Timer 2 trigger |
| Broche 3 | P1.2 — Port 1.2 |
| Broche 4 | P1.3 — Port 1.3 |
| Broche 5 | P1.4 — Port 1.4 |
| Broche 6 | P1.5 — Port 1.5 |
| Broche 7 | P1.6 — Port 1.6 |
| Broche 8 | P1.7 — Port 1.7 |
| Broche 9 | RST — Reset input (active high) |
| Broche 10 | P3.0/RXD — Port 3.0 / UART receive |
| Broche 11 | P3.1/TXD — Port 3.1 / UART transmit |
| Broche 12 | P3.2/INT0 — Port 3.2 / External interrupt 0 |
| Broche 13 | P3.3/INT1 — Port 3.3 / External interrupt 1 |
| Broche 14 | P3.4/CANRX — Port 3.4 / CAN receive |
| Broche 15 | P3.5/CANTX — Port 3.5 / CAN transmit |
| Broche 16 | P3.6/WR — Port 3.6 / External write strobe |
| Broche 17 | P3.7/RD — Port 3.7 / External read strobe |
| Broche 18 | XTAL2 — Crystal output |
| Broche 19 | XTAL1 — Crystal input |
| Broche 20 | VSS — Ground |
| Broche 21 | P2.0/A8 — Port 2.0 / Address bit 8 |
| Broche 22 | P2.1/A9 — Port 2.1 / Address bit 9 |
| Broche 23 | P2.2/A10 — Port 2.2 / Address bit 10 |
| Broche 24 | P2.3/A11 — Port 2.3 / Address bit 11 |
| Broche 25 | P2.4/A12 — Port 2.4 / Address bit 12 |
| Broche 26 | P2.5/A13 — Port 2.5 / Address bit 13 |
| Broche 27 | P2.6/A14 — Port 2.6 / Address bit 14 |
| Broche 28 | P2.7/A15 — Port 2.7 / Address bit 15 |
| Broche 29 | PSEN — Program Store enable (active low) |
| Broche 30 | ALE — Address Latch Enable |
| Broche 31 | EA — External Access (active high) |
| Broche 32 | P0.7/AD7 — Port 0.7 / Address-Data 7 |
| Broche 33 | P0.6/AD6 — Port 0.6 / Address-Data 6 |
| Broche 34 | P0.5/AD5 — Port 0.5 / Address-Data 5 |
| Broche 35 | P0.4/AD4 — Port 0.4 / Address-Data 4 |
| Broche 36 | P0.3/AD3 — Port 0.3 / Address-Data 3 |
| Broche 37 | P0.2/AD2 — Port 0.2 / Address-Data 2 |
| Broche 38 | P0.1/AD1 — Port 0.1 / Address-Data 1 |
| Broche 39 | P0.0/AD0 — Port 0.0 / Address-Data 0 |
| Broche 40 | VCC — +5V supply (3-5.5V CA variant) |
| Broche 41 | P4.0/ADC0 — Port 4.0 / ADC channel 0 |
| Broche 42 | P4.1/ADC1 — Port 4.1 / ADC channel 1 |
| Broche 43 | P4.2/ADC2 — Port 4.2 / ADC channel 2 |
| Broche 44 | P4.3/ADC3 — Port 4.3 / ADC channel 3 |
Applications typiques
AT89C51CC03CA-SLRUM convient pour 6 applications: Industrial CAN-Bus Distributed Nodes, Automotive Body Controllers, Building Automation HVAC Nodes, Motor Control via CANopen/DeviceNet, Embedded Instrumentation with CAN Interface, CAN-Bus Sensor Hubs.
Industrial CAN-Bus Distributed Nodes
The AT89C51CC03CA-SLRUM fits industrial CAN-bus distributed nodes because it integrates a full Bosch CAN 2.0B controller with 15 message objects alongside a 64 KB Flash program store, eliminating the need for a separate CAN controller chip and reducing BOM cost. Its 2 KB on-chip EEPROM (HEF) provides 1,000-cycle non-volatile parameter storage at the node, with the 5 V (CA variant) supply tolerating industrial 24 V rails after regulation. The 36 I/O lines connect to sensors and actuators, while the 8-channel 10-bit ADC handles analog sensor reading at moderate sampling rates. The PLCC-44 socket-mountable footprint simplifies field-serviceable modules in factory automation, where nodes may need replacement without board rework. Compared to a discrete 8051 plus external CAN IC, this part integrates the full CAN protocol in silicon and saves roughly 4-6 cm² of PCB area per node.
Recommandé
Automotive Body Controllers
The AT89C51CC03CA-SLRUM suits automotive body controller modules (lighting, comfort, door modules, seat controllers) thanks to its full CAN 2.0B integration, -40C to +85C industrial temperature range, and 5 V (CA variant) supply tolerance for 12 V bus systems. Its 64 KB Flash accommodates CANopen or DeviceNet application-layer stacks plus diagnostic firmware, and the 2 KB EEPROM stores calibration data (window position, seat presets) with 1,000 write/erase cycle. The 8-channel ADC reads analog sensors (light level, temperature, position), and 36 I/O lines drive LEDs, relays, and switch inputs. In a typical body controller, the CC03CA sits between the 12 V vehicle battery (regulated down to 5 V) and a TJA1050 CAN transceiver, transmitting body status frames on the CAN bus at 100/500 kbps. Compared to the automotive-Q1-qualified ATmega32M1, this part trades MCUs for 8051 wiring.
Recommandé
Building Automation HVAC Nodes
The AT89C51CC03CA-SLRUM is a strong match for building automation HVAC nodes where multiple thermostats, damper actuators, and air-handling units share a CAN bus. Its integrated full CAN controller with 15 message objects supports CANopen or vendor-proprietary CAN protocols with real-time deterministic latency. The 64 KB Flash fits a CANopen stack plus HVAC control firmware, and the 2 KB EEPROM stores commissioning data (zone setpoints, schedule tables) with non-volatile retention. The 8-channel ADC reads analog temperature sensors (NTC thermistors, 0-10V setpoints), and 36 I/O lines drive triac outputs for damper motors and relays for fans. In a typical zone controller, the CC03CA reads thermistor resistance via the ADC, computes a CANopen PDO with setpoint feedback, and broadcasts over the CAN bus every 100 ms. The PLCC-44 socketable package simplifies replacement in service contracts.
Recommandé
Motor Control via CANopen/DeviceNet
The AT89C51CC03CA-SLRUM serves motor control slaves on CANopen or DeviceNet networks where cost-optimized 8051 controllers are sufficient for simple V/F or FOC drives below 1 kW. Its full CAN 2.0B controller with 15 message objects handles CANopen SDO/PDO traffic plus NMT heartbeats, while the 64 KB Flash stores the CANopen library (typically 8-15 KB) plus application logic. The 2 KB EEPROM stores motor parameters (pole pairs, current limits, encoder offset) with 1000-cycle endurance. The 2 x 16-bit timers generate PWM dead-time-controlled outputs (via firmware GPIO), and the 8-channel ADC samples current/voltage feedback. Compared to dedicated motor-control MCUs like dsPIC33, the CC03CA handles only basic V/F drives at switching frequencies below 4 kHz, but offers a 5 V supply tolerance that simplifies gate-driver interface.
Recommandé
Embedded Instrumentation with CAN Interface
The AT89C51CC03CA-SLRUM fits embedded instrumentation (process meters, test equipment, sensor readout modules) that must log or transmit measurements over a CAN bus. Its full CAN controller provides a deterministic interface to a higher-level data acquisition system, while the 64 KB Flash stores measurement firmware plus calibration tables. The 2 KB EEPROM stores per-unit calibration constants with non-volatile retention, and the 8-channel 10-bit ADC samples analog signals at moderate precision (10 bits / ~10 kSPS aggregate). In a typical multi-channel data logger, the CC03CA scans 8 analog inputs via the ADC, computes RMS or peak values, and transmits CAN frames at 100 ms intervals. Compared to a separate ADC plus 8051, this part provides a single-chip solution with on-chip CAN, eliminating SPI bus contention.
Recommandé
CAN-Bus Sensor Hubs
The AT89C51CC03CA-SLRUM is ideal for low-cost CAN sensor hubs in factories, where each unit aggregates 8 ADC readings and broadcasts them on the CAN bus. Its full CAN 2.0B controller with 15 message objects supports multi-sensor CAN frames with arbitration, while the 8-channel 10-bit ADC reads thermistors, pressure sensors, and flow meters directly. The 64 KB Flash stores hub firmware plus simple CAN protocol, and the 2 KB EEPROM stores calibration data with 1000-cycle endurance. The 36 I/O lines drive LEDs for status indication and digital sensor inputs (limit switches, encoder index). Compared to a microcontroller plus external CAN IC solution, the CC03CA reduces PCB area and BOM by integrating the CAN controller, EEPROM, and ADC in a single PLCC-44 chip, making it a popular choice for industrial CAN sensor hubs with sub-$15 unit cost targets.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AT89C51CC03CA-SLRUM — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AT89C51CC03CA-SLSUM | AT89C51CC03UA-SLSUM | AT89C51CC03CA-RLTUM | AT89C51AC3-SLSUM | AT89C51RB2-SLSIL | AT89C51ID2-SLSIM |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PLCC-44 (16.6x16.6 mm) | PLCC-44 (16.6x16.6 mm) | PLCC-44 (16.6x16.6 mm) | VQFP-44 (10x10 mm) | PLCC-44 (16.6x16.6 mm) | PLCC-44 (16.6x16.6 mm) | PLCC-44 (16.6x16.6 mm) |
| Core | 8051 (8-bit CISC) | 8051 (8-bit CISC) | 8051 (8-bit CISC) | 8051 (8-bit CISC) | 8051 (8-bit CISC) | 8051 (8-bit CISC) | 8051 (8-bit CISC) |
| Program Flash | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 16 KB | 64 KB |
| Data EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB | 2 KB |
| Integrated CAN | Yes (CAN 2.0B, 15 msg objects) | Yes (CAN 2.0B, 15 msg objects) | Yes (CAN 2.0B, 15 msg objects) | Yes (CAN 2.0B, 15 msg objects) | No | No | Yes (CAN 2.0B + USB) |
| Supply Voltage | 3.0 V to 5.5 V (CA) | 3.0 V to 5.5 V (CA) | 2.7 V to 3.6 V (UA) | 3.0 V to 5.5 V (CA) | 3.0 V to 5.5 V | 2.7 V to 3.6 V | 3.0 V to 5.5 V |
| Max Clock Frequency | 40 MHz (6.66 MIPS) | 40 MHz (6.66 MIPS) | 40 MHz (6.66 MIPS) | 40 MHz (6.66 MIPS) | 40 MHz | 60 MHz | 40 MHz |
Principaux différenciateurs
- Integrated full CAN 2.0B controller with 15 message objects (vs AT89C51AC3-SLSUM)
- 2 KB on-chip EEPROM with 1000 write/erase cycle endurance (vs AT89C51RB2-SLSIL)
- 5 V (CA) supply range vs 3.3 V (UA) (vs AT89C51CC03UA-SLSUM)
Notes de conception
Estimated: At 40 MHz clock and VCC = 5 V, typical operating current is approximately 25 mA (datasheet typical). Decouple the VCC/PLCC pin 40 supply with a 100 nF ceramic cap placed within 5 mm of the pin and a 10 uF bulk cap on the same node. Add a 10 uF bulk cap at the regulator output. For power-sensitive nodes, the IDLE and Power-Down modes reduce consumption below 1 mA; configure CANINT to wake from Power-Down via an external interrupt on P3.2/INT0.
Route the CANH/CANL pair as a differential microstrip with 120 ohm characteristic impedance, terminated at each bus end with 120 ohm resistors to ground (CANH to CANL). Keep the CAN transceiver (TJA1050) within 50 mm of the CC03CA's CANRX/CANTX pins to avoid stub reflections. Place the crystal (XTAL1/XTAL2) within 10 mm of pins 18-19 with short traces; use a fundamental-mode crystal with 20 pF load caps to ground.
Do not exceed the absolute maximum VCC of 6.5 V (datasheet absolute maximum) - use a 5 V regulator (MC7805 or equivalent) from a higher bus rail. The on-chip 2 KB EEPROM has 1,000 write/erase cycle endurance - use wear-leveling if you need to log data at higher rates, or move to an external I2C EEPROM (24LC256) for higher endurance. Ensure the RST pin (pin 9) has a proper power-on reset circuit (10 kohm pull-up + 10 uF cap to ground).
Estimated: At 40 MHz and 5 V VCC with all I/O toggling, total power dissipation is approximately 125 mW (datasheet typical). The PLCC-44 has theta_JA approximately 45 C/W (typical for J-lead package in still air), resulting in a 5.6 C junction temperature rise above ambient at full load. For industrial -40 C to +85 C operation, this thermal headroom is more than sufficient at standard operation; a heatsink is not needed unless operating above 70 C ambient at full I/O load.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose automotive-specific Atmel/Microchip part for automotive AEC-Q100. Lead-free (Pb-free) package. Halogen-free status not explicitly confirmed in the verified web data.
