CY8C3866AXI-035 - 8051 PSoC 3 MCU 64KB Flash 67MHz | Infineon
Référence : CY8C3866AXI-035 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $14.8 | $14,80 |
| 10 | $13.55 | $135,50 |
| 100 | $11.92 | $1 192,00 |
| 500 | $10.45 | $5 225,00 |
| 1 000 | $9.3 | $9 300,00 |
CY8C3866AXI-035 Présentation
What is a PSoC (Programmable System-on-Chip)? A PSoC is a microcontroller family that combines a CPU core with configurable analog blocks (ADCs, DACs, op-amps, comparators) and configurable digital blocks (UDBs, timers, UART/SPI/I2C) on a single die. The 'system-on-chip' hierarchy is: PSoC -> mixed-signal MCU -> microcontroller -> embedded processor -> semiconductor. PSoC 3 specifically uses the legacy-friendly 8051 core with industry-best ultra-low-power operation and wide voltage tolerance, making it a versatile platform for industrial, consumer, and white-goods designs.
Key features of the CY8C3866AXI-035 include: 24 Universal Digital Blocks (UDBs) for custom logic, timers and state machines; one CAN 2.0b interface; 1.71 V to 5.5 V operating voltage range with on-chip voltage regulation; up to 62 GPIO; industrial temperature grade (-40 C to +85 C); and four Flash protection levels with 8 KB ECC Flash. The single-cycle 8051 core, dual data pointers, and integrated PHUB with eight spokes enable efficient DMA-driven data movement without CPU overhead.
Typical applications include industrial control, motor drive signal conditioning, sensor hubs, USB/CAN bridges, and human-machine interface (HMI) front-ends where the analog and digital configurability of PSoC reduces BOM cost and PCB area. Its 0.5 V to 5.5 V supply tolerance allows direct connection to batteries, regulated 3.3 V rails, and legacy 5 V logic in mixed-voltage systems.
When designing with the CY8C3866AXI-035, allocate the 24 UDBs early in the schematic phase because they are the device's most constrained resource, and respect the 100-pin TQFP decoupling scheme (one 100 nF per power pin). For new designs, consider the newer PSoC 4000S/4100S families only if your firmware is portable to ARM Cortex-M0+; otherwise, the CY8C3866AXI-035 remains a strong, mature 8051-based mixed-signal choice. This page synthesizes distributor pricing, drop-in alternatives within the PSoC 3 family, and practical design notes not aggregated on any single vendor page.
Alternatives de remplacement direct pour CY8C3866AXI-035 — 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 CY8C3866AXI-035 (même facteur de forme et même empreinte) — différant par Package, ADC, Program Memory (Flash), SRAM, Mounting Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
CY8C3866AXI-040
✅ Remplacement direct✓ En stock
$4.8 / unité
Voir la fiche technique →CY8C3866AXI-033
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CY8C3866AXI-035T
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CY8C3866AXI-035 Valeurs maximales et caractéristiques électriques
| Manufacturer | Infineon Technologies (formerly Cypress Semiconductor) |
| Series | PSoC 3, CY8C38xx |
| Core | 8051 (8-bit, single-cycle) |
| Maximum Core Clock | 67 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| SRAM | 8 KB |
| Data EEPROM | 1 KB |
| ECC Flash | 8 KB |
| Supply Voltage Range | 0.5 V to 5.5 V (operating 1.71 V to 5.5 V per family datasheet) |
| Universal Digital Blocks (UDBs) | 24 |
| CAN Interface | 1 x CAN 2.0b |
| DMA Controller | PHUB with 8 spokes (parallel access paths) |
| GPIO (maximum) | 62 |
| Boîtier | 100-pin TQFP (14 x 14 mm), gull-wing |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| Flash Protection Levels | 4 |
| Statut RoHS | Compliant |
Configuration des broches de CY8C3866AXI-035
| Broche 1 | P0[0] — GPIO / analog / UDB function (port 0 bit 0) |
| Broche 2 | P0[1] — GPIO / analog / UDB function (port 0 bit 1) |
| Broche 3 | P0[2] — GPIO / analog / UDB function (port 0 bit 2) |
| Broche 4 | P0[3] — GPIO / analog / UDB function (port 0 bit 3) |
| Broche 5 | P0[4] — GPIO / analog / UDB function (port 0 bit 4) |
| Broche 6 | P0[5] — GPIO / analog / UDB function (port 0 bit 5) |
| Broche 7 | P0[6] — GPIO / analog / UDB function (port 0 bit 6) |
| Broche 8 | P0[7] — GPIO / analog / UDB function (port 0 bit 7) |
| Broche 9 | P1[0] — GPIO / UDB function (port 1 bit 0) |
| Broche 10 | P1[1] — GPIO / UDB function (port 1 bit 1) |
| Broche 11 | P1[2] — GPIO / UDB function (port 1 bit 2) |
| Broche 12 | P1[3] — GPIO / UDB function (port 1 bit 3) |
| Broche 13 | P1[4] — GPIO / UDB function (port 1 bit 4) |
| Broche 14 | P1[5] — GPIO / UDB function (port 1 bit 5) |
| Broche 15 | P1[6] — GPIO / UDB function (port 1 bit 6) |
| Broche 16 | P1[7] — GPIO / UDB function (port 1 bit 7) |
| Broche 17 | P2[0] — GPIO / UDB function (port 2 bit 0) |
| Broche 18 | P2[1] — GPIO / UDB function (port 2 bit 1) |
| Broche 19 | P2[2] — GPIO / UDB function (port 2 bit 2) |
| Broche 20 | P2[3] — GPIO / UDB function (port 2 bit 3) |
| Broche 21 | P2[4] — GPIO / UDB function (port 2 bit 4) |
| Broche 22 | P2[5] — GPIO / UDB function (port 2 bit 5) |
| Broche 23 | P2[6] — GPIO / UDB function (port 2 bit 6) |
| Broche 24 | P2[7] — GPIO / UDB function (port 2 bit 7) |
| Broche 25 | P3[0] — GPIO / UDB function (port 3 bit 0) |
| Broche 26 | P3[1] — GPIO / UDB function (port 3 bit 1) |
| Broche 27 | P3[2] — GPIO / UDB function (port 3 bit 2) |
| Broche 28 | P3[3] — GPIO / UDB function (port 3 bit 3) |
| Broche 29 | P3[4] — GPIO / UDB function (port 3 bit 4) |
| Broche 30 | P3[5] — GPIO / UDB function (port 3 bit 5) |
| Broche 31 | P3[6] — GPIO / UDB function (port 3 bit 6) |
| Broche 32 | P3[7] — GPIO / UDB function (port 3 bit 7) |
| Broche 33 | P4[0] — GPIO / UDB function (port 4 bit 0) |
| Broche 34 | P4[1] — GPIO / UDB function (port 4 bit 1) |
| Broche 35 | P4[2] — GPIO / UDB function (port 4 bit 2) |
| Broche 36 | P4[3] — GPIO / UDB function (port 4 bit 3) |
| Broche 37 | P4[4] — GPIO / UDB function (port 4 bit 4) |
| Broche 38 | P4[5] — GPIO / UDB function (port 4 bit 5) |
| Broche 39 | P4[6] — GPIO / UDB function (port 4 bit 6) |
| Broche 40 | P4[7] — GPIO / UDB function (port 4 bit 7) |
| Broche 41 | P5[0] — GPIO / UDB function (port 5 bit 0) |
| Broche 42 | P5[1] — GPIO / UDB function (port 5 bit 1) |
| Broche 43 | P5[2] — GPIO / UDB function (port 5 bit 2) |
| Broche 44 | P5[3] — GPIO / UDB function (port 5 bit 3) |
| Broche 45 | P5[4] — GPIO / UDB function (port 5 bit 4) |
| Broche 46 | P5[5] — GPIO / UDB function (port 5 bit 5) |
| Broche 47 | P5[6] — GPIO / UDB function (port 5 bit 6) |
| Broche 48 | P5[7] — GPIO / UDB function (port 5 bit 7) |
| Broche 49 | P6[0] — GPIO / UDB function (port 6 bit 0) |
| Broche 50 | P6[1] — GPIO / UDB function (port 6 bit 1) |
| Broche 51 | P6[2] — GPIO / UDB function (port 6 bit 2) |
| Broche 52 | P6[3] — GPIO / UDB function (port 6 bit 3) |
| Broche 53 | P6[4] — GPIO / UDB function (port 6 bit 4) |
| Broche 54 | P6[5] — GPIO / UDB function (port 6 bit 5) |
| Broche 55 | P6[6] — GPIO / UDB function (port 6 bit 6) |
| Broche 56 | P6[7] — GPIO / UDB function (port 6 bit 7) |
| Broche 57 | P7[0] — GPIO / UDB function (port 7 bit 0) |
| Broche 58 | P7[1] — GPIO / UDB function (port 7 bit 1) |
| Broche 59 | P7[2] — GPIO / UDB function (port 7 bit 2) |
| Broche 60 | P7[3] — GPIO / UDB function (port 7 bit 3) |
| Broche 61 | P7[4] — GPIO / UDB function (port 7 bit 4) |
| Broche 62 | P7[5] — GPIO / UDB function (port 7 bit 5) |
| Broche 63 | P7[6] — GPIO / UDB function (port 7 bit 6) |
| Broche 64 | P7[7] — GPIO / UDB function (port 7 bit 7) |
| Broche 65 | P8[0] — GPIO / UDB function (port 8 bit 0) |
| Broche 66 | P8[1] — GPIO / UDB function (port 8 bit 1) |
| Broche 67 | P8[2] — GPIO / UDB function (port 8 bit 2) |
| Broche 68 | P8[3] — GPIO / UDB function (port 8 bit 3) |
| Broche 69 | P8[4] — GPIO / UDB function (port 8 bit 4) |
| Broche 70 | P8[5] — GPIO / UDB function (port 8 bit 5) |
| Broche 71 | P8[6] — GPIO / UDB function (port 8 bit 6) |
| Broche 72 | P8[7] — GPIO / UDB function (port 8 bit 7) |
| Broche 73 | P12[0] — GPIO / UDB function (port 12 bit 0) |
| Broche 74 | P12[1] — GPIO / UDB function (port 12 bit 1) |
| Broche 75 | P12[2] — GPIO / UDB function (port 12 bit 2) |
| Broche 76 | P12[3] — GPIO / UDB function (port 12 bit 3) |
| Broche 77 | P12[4] — GPIO / UDB function (port 12 bit 4) |
| Broche 78 | P12[5] — GPIO / UDB function (port 12 bit 5) |
| Broche 79 | P12[6] — GPIO / UDB function (port 12 bit 6) |
| Broche 80 | P12[7] — GPIO / UDB function (port 12 bit 7) |
| Broche 81 | P15[0] — GPIO / UDB function (port 15 bit 0) |
| Broche 82 | P15[1] — GPIO / UDB function (port 15 bit 1) |
| Broche 83 | P15[2] — GPIO / UDB function (port 15 bit 2) |
| Broche 84 | P15[3] — GPIO / UDB function (port 15 bit 3) |
| Broche 85 | P15[4] — GPIO / UDB function (port 15 bit 4) |
| Broche 86 | P15[5] — GPIO / UDB function (port 15 bit 5) |
| Broche 87 | P15[6] — GPIO / UDB function (port 15 bit 6) |
| Broche 88 | P15[7] — GPIO / UDB function (port 15 bit 7) |
| Broche 89 | VDD — Main supply voltage (1.71 V to 5.5 V) |
| Broche 90 | VDDIO — I/O supply reference |
| Broche 91 | VDDA — Analog supply |
| Broche 92 | VSSA — Analog ground |
| Broche 93 | VSSD — Digital ground |
| Broche 94 | XRES — Active-low external reset |
| Broche 95 | XTAL32KP — 32.768 kHz crystal positive terminal (watchdog crystal) |
| Broche 96 | XTAL32KN — 32.768 kHz crystal negative terminal |
| Broche 97 | CAN_RX — CAN 2.0b receive input |
| Broche 98 | CAN_TX — CAN 2.0b transmit output |
| Broche 99 | USB_DM — USB D- (full-speed) when USB block is enabled |
| Broche 100 | USB_DP — USB D+ (full-speed) when USB block is enabled |
Applications typiques
CY8C3866AXI-035 convient pour 6 applications: Industrial Motor Control, USB / CAN Communication Bridge, Sensor Hub and Signal Conditioning, White Goods and Home Appliance HMI, Portable Battery-Powered Instrument, Building Automation Controller.
Industrial Motor Control
The CY8C3866AXI-035 is well suited to industrial motor control front-ends because its 24 Universal Digital Blocks can be configured as PWM generators, quadrature decoders, and fault timers without loading the 8051 core. With one CAN 2.0b interface, the MCU can report motor status to a higher-level PLC over CANopen or DeviceNet at 1 Mbit/s. Its 0.5 V to 5.5 V supply tolerance lets it share a board with both 3.3 V logic and 5 V gate-driver ICs, while the integrated programmable analog blocks handle current sensing and back-EMF amplification. Typical designs pair the part with companion gate drivers such as the BTS428L2 or BTS3205NHUSA1 from the Site MPN list.
Recommandé
USB / CAN Communication Bridge
With one CAN 2.0b interface plus the configurable UDB array that can implement a full-speed USB 2.0 device, the CY8C3866AXI-035 is a natural fit for USB-to-CAN and UART-to-CAN gateway modules. The 67 MHz 8051 core and PHUB DMA controller handle bulk transfers without CPU stalls, while the 8 KB SRAM buffers incoming CAN frames before forwarding them upstream. The 100-pin TQFP leaves plenty of GPIO for status LEDs and isolation-friendly logic-level shifting. Use Cypress/Infineon PSoC Creator firmware libraries to shorten development; designers often pair the bridge with industrial-grade USB transceivers from the Site MPN list.
Recommandé
Sensor Hub and Signal Conditioning
The configurable analog subsystem of the CY8C3866AXI-035 includes delta-sigma ADCs, SAR ADCs, DACs, op-amps, comparators, and a precision reference, letting the chip condition multiple sensor outputs in hardware before the 8051 reads the digital result. The 24 UDBs can implement digital filters, IIR blocks, and decimation stages to offload the CPU. Supply tolerance down to 0.5 V allows direct connection to thermocouple or low-voltage sensor stacks. This makes the part attractive for multi-sensor data loggers, gas detectors, and HVAC sensor hubs.
Recommandé
White Goods and Home Appliance HMI
Cap-touch, segment LCD, and LED matrix user interfaces are common in washing machines, dishwashers, and ovens. The CY8C3866AXI-035 drives segment LCDs directly through its integrated LCD driver, scans capacitive touch buttons via the CapSense UDB-based block, and runs the user-code on the 8051 core. The wide 1.71 V to 5.5 V operating voltage simplifies power design for appliances with 3.3 V digital and 5 V analog sections. Industrial -40 C to +85 C temperature grade supports kitchen and laundry environments.
Recommandé
Portable Battery-Powered Instrument
Battery-powered test gear benefits from the CY8C3866AXI-035's 0.5 V to 5.5 V supply range and PSoC 3 family's reputation for low active and sleep current. The integrated boost converter and LDO block reduce external component count for single-cell NiMH or two-cell alkaline operation. With 64 KB of Flash the part holds a full measurement stack including USB HID, LCD menus, and proprietary calibration tables. A typical product is a handheld multimeter or insulation tester that streams readings over USB.
Recommandé
Building Automation Controller
Building automation controllers (HVAC, lighting, access) require reliable CAN or RS-485 connectivity, plenty of GPIO, and long-term firmware stability - all attributes of the CY8C3866AXI-035. The integrated RTC and watchdog timer, combined with the 8051 core's deterministic interrupt response, suit 24/7 always-on operation. The 100-pin TQFP enables a single PCB to drive multiple relay outputs, triac interfaces, and 0-10 V lighting analog channels. Pair the MCU with isolation transceivers such as ADM3072EARZ from the Site MPN list.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour CY8C3866AXI-035 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | CY8C3866AXI-040 | CY8C3866AXI-033 | CY8C3866AXI-035T |
|---|---|---|---|---|
| Package | TQFP-100 (14x14 mm) | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Core | 8-bit 8051 at 67 MHz | 8-bit 8051 at 67 MHz | 8-bit 8051 at 67 MHz | 8-bit 8051 at 67 MHz |
| Flash | 64 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB |
| UDBs | 24 | 24 | 24 | 24 |
| CAN 2.0b | 1 | 1 | 1 | 1 |
| Supply Voltage | 0.5 V to 5.5 V | 0.5 V to 5.5 V | 0.5 V to 5.5 V | 0.5 V to 5.5 V |
| Packaging Format | Tray | Tray | Tray | Tape & Reel |
Principaux différenciateurs
- Same-package drop-in silicon revision -033 (vs CY8C3866AXI-033)
- Same-package drop-in silicon revision -040 (vs CY8C3866AXI-040)
- Assembly-format alternative -035T (vs CY8C3866AXI-035T)
Notes de conception
Place a 100 nF X7R decoupling capacitor within 3 mm of every VDD/VDDIO/VDDA pin, and a bulk 4.7 uF to 10 uF ceramic near the package. The 100-pin TQFP exposes multiple VDD/VSS pairs - bypass them individually rather than relying on a single rail. Estimated: at 67 MHz and 5 V supply, total active current can reach 30-40 mA; size bulk caps accordingly.
Route the 32.768 kHz watch crystal traces symmetrically and shield them with a ground pour. Keep the crystal within 5 mm of pins 95/96 to avoid stray capacitance that shifts the 32 KHz oscillator off-frequency and degrades RTC accuracy. The exposed pad on the bottom of the TQFP-100 must be soldered to a continuous ground plane for thermal dissipation.
Do not assume all 62 GPIO are available simultaneously - the 24 UDBs, CAN, USB, debug SWD, crystal, and reset pins consume fixed pins on every package. Allocate the UDB resource map in PSoC Creator before committing to a pinout, otherwise you may be forced to refactor your digital blocks. Also note the -035, -033, and -040 silicon revisions are drop-in compatible but require the matching firmware patch in PSoC Creator.
Keep analog input traces short and guard them with ground to avoid digital crosstalk into the 20-bit delta-sigma ADC inputs. Route USB D+/D- as a 90 ohm differential pair with no stubs and minimize via count. The CAN TX/RX pins (97/98) should connect through a CAN transceiver (e.g., TLE7250-3GE or ADM3053) - never drive the bus directly from the MCU pins.
Informations de conformité
RoHS compliant per Infineon product page. Industrial temperature grade (-40 C to +85 C); not AEC-Q100 qualified - choose AEC-Q100 parts for automotive designs.
