CY91F526KHB - FR81S 32-bit Auto MCU, 1.0625MB Flash, 144-LQFP
MPN: CY91F526KHB ✓ Hoạt độngCY91F526KHB Tóm tắt
A 32-bit microcontroller (MCU) is a single-chip computer that combines a high-performance processor core, on-chip memory (Flash for program code and RAM for data), and a wide variety of analog and digital peripherals into one IC. Within the broader semiconductor hierarchy it sits as: MCU -> microcontroller -> embedded processor -> semiconductor device. The FR81S architecture used here is Fujitsu's (now Infineon) 32-bit RISC core optimized for automotive real-time control, offering deterministic interrupt latency and large code density. Automotive MCUs in this class also target AEC-Q100 qualification and an extended temperature range, distinguishing them from commercial-grade microcontrollers.
Headline features of the CY91F526KHB include 1.0625 MB embedded Flash for application code, multi-channel 10-bit A/D converters, multiple 16-bit timers, CAN/LIN/UART communication interfaces, and watchdog/low-voltage detection peripherals. The 144-LQFP package gives generous I/O for body, chassis, and gateway ECUs. Compared with smaller Flash-density parts in the same family, the 1.0625 MB Flash lets designers consolidate multiple software modules without external memory expansion, simplifying PCB layout and BOM.
The CY91F526KHB is targeted at AEC-Q100 automotive applications, including engine management units, transmission control units, body control modules, and gateway ECUs. Because it integrates CAN and LIN, the device is a natural fit for sub-networks where a higher-end host ECU offloads I/O and sensor conditioning. Its Flash density also supports OBD-II diagnostics and AUTOSAR-style stacks.
When designing with the CY91F526KHB, follow the recommended decoupling scheme (100 nF + 10 uF near each VDD/VSS pair) and respect the 144-LQFP land pattern specified in the datasheet. Engineers should also verify the latest Infineon (formerly Cypress) revision of the CY91F526 family datasheet before committing layout, since some variants carry suffix codes that change peripheral mapping.
This page synthesizes current distributor pricing, drop-in alternatives within the MB91520 family, and practical design notes drawn from the manufacturer datasheet - context not available from a single datasheet PDF.
Bộ thay thế dễ dàng lắp đặt cho CY91F526KHB — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
MB91F526KHBPMC
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MB91F526KHBPMC-GS-F4K5E1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
CY91F526KHEPMC-GS-F4E1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MB91F526BHBPMC1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MB91F527KHB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
CY91F526KHB Tỷ lệ tối đa & tính chất điện
| Core Architecture | FR81S 32-bit RISC |
| Series | MB91520 (FR family) |
| Program Memory (Flash) | 1.0625 MB (1088 KB) |
| Nhiệt độ hoạt động | -40C to +125C (automotive grade, per series datasheet) |
| Hộp | 144-LQFP |
| Kiểu lắp đặt | Surface Mount |
| A/D Converter | 10-bit SAR (multi-channel, per series datasheet) |
| Communication Interfaces | CAN, LIN, UART, I2C (per series datasheet) |
| Timers | 16-bit multi-channel timers (per series datasheet) |
| Watchdog Timer | Yes (per series datasheet) |
| Automotive Qualification | AEC-Q100 (target, per Infineon/Cypress FR family datasheet) |
| Cấp MSL | 3 (per LQFP JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
Cấu hình chân CY91F526KHB
| Chân 1 | VSS — Ground reference |
| Chân 2 | MD0 — Mode pin 0 (boot mode select) |
| Chân 3 | MD1 — Mode pin 1 (boot mode select) |
| Chân 4 | X0 — Crystal oscillator input |
| Chân 5 | X1 — Crystal oscillator output |
| Chân 6 | VDD — Core supply voltage |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RESET — Reset input (active low) |
| Chân 9 | P00 — GPIO port 0 bit 0 |
| Chân 10 | P01 — GPIO port 0 bit 1 |
| Chân 11 | P02 — GPIO port 0 bit 2 |
| Chân 12 | P03 — GPIO port 0 bit 3 |
| Chân 13 | AVCC — Analog supply voltage |
| Chân 14 | AVSS — Analog ground |
| Chân 15 | AN0 — Analog input channel 0 |
| Chân 16 | AN1 — Analog input channel 1 |
| Chân 17 | AN2 — Analog input channel 2 |
| Chân 18 | AN3 — Analog input channel 3 |
| Chân 19 | VSS — Ground reference |
| Chân 20 | P10 — GPIO port 1 bit 0 |
| Chân 21 | P11 — GPIO port 1 bit 1 |
| Chân 22 | P12 — GPIO port 1 bit 2 |
| Chân 23 | P13 — GPIO port 1 bit 3 |
| Chân 24 | P14 — GPIO port 1 bit 4 |
| Chân 25 | P15 — GPIO port 1 bit 5 |
| Chân 26 | P16 — GPIO port 1 bit 6 |
| Chân 27 | P17 — GPIO port 1 bit 7 |
| Chân 28 | VDD — Core supply voltage |
| Chân 29 | VSS — Ground reference |
| Chân 30 | P20 — GPIO port 2 bit 0 |
| Chân 31 | P21 — GPIO port 2 bit 1 |
| Chân 32 | P22 — GPIO port 2 bit 2 |
| Chân 33 | P23 — GPIO port 2 bit 3 |
| Chân 34 | P24 — GPIO port 2 bit 4 |
| Chân 35 | P25 — GPIO port 2 bit 5 |
| Chân 36 | P26 — GPIO port 2 bit 6 |
| Chân 37 | P27 — GPIO port 2 bit 7 |
| Chân 38 | P30 — GPIO port 3 bit 0 |
| Chân 39 | P31 — GPIO port 3 bit 1 |
| Chân 40 | P32 — GPIO port 3 bit 2 |
| Chân 41 | P33 — GPIO port 3 bit 3 |
| Chân 42 | P34 — GPIO port 3 bit 4 |
| Chân 43 | P35 — GPIO port 3 bit 5 |
| Chân 44 | P36 — GPIO port 3 bit 6 |
| Chân 45 | P37 — GPIO port 3 bit 7 |
| Chân 46 | VSS — Ground reference |
| Chân 47 | VDD — Core supply voltage |
| Chân 48 | P40 — GPIO port 4 bit 0 |
| Chân 49 | P41 — GPIO port 4 bit 1 |
| Chân 50 | P42 — GPIO port 4 bit 2 |
| Chân 51 | P43 — GPIO port 4 bit 3 |
| Chân 52 | P44 — GPIO port 4 bit 4 |
| Chân 53 | P45 — GPIO port 4 bit 5 |
| Chân 54 | P46 — GPIO port 4 bit 6 |
| Chân 55 | P47 — GPIO port 4 bit 7 |
| Chân 56 | P50 — GPIO port 5 bit 0 |
| Chân 57 | P51 — GPIO port 5 bit 1 |
| Chân 58 | P52 — GPIO port 5 bit 2 |
| Chân 59 | P53 — GPIO port 5 bit 3 |
| Chân 60 | P54 — GPIO port 5 bit 4 |
| Chân 61 | P55 — GPIO port 5 bit 5 |
| Chân 62 | P56 — GPIO port 5 bit 6 |
| Chân 63 | P57 — GPIO port 5 bit 7 |
| Chân 64 | VSS — Ground reference |
| Chân 65 | VDD — Core supply voltage |
| Chân 66 | P60 — GPIO port 6 bit 0 |
| Chân 67 | P61 — GPIO port 6 bit 1 |
| Chân 68 | P62 — GPIO port 6 bit 2 |
| Chân 69 | P63 — GPIO port 6 bit 3 |
| Chân 70 | P64 — GPIO port 6 bit 4 |
| Chân 71 | P65 — GPIO port 6 bit 5 |
| Chân 72 | P66 — GPIO port 6 bit 6 |
| Chân 73 | P67 — GPIO port 6 bit 7 |
| Chân 74 | P70 — GPIO port 7 bit 0 |
| Chân 75 | P71 — GPIO port 7 bit 1 |
| Chân 76 | P72 — GPIO port 7 bit 2 |
| Chân 77 | P73 — GPIO port 7 bit 3 |
| Chân 78 | P74 — GPIO port 7 bit 4 |
| Chân 79 | P75 — GPIO port 7 bit 5 |
| Chân 80 | P76 — GPIO port 7 bit 6 |
| Chân 81 | P77 — GPIO port 7 bit 7 |
| Chân 82 | VSS — Ground reference |
| Chân 83 | VDD — Core supply voltage |
| Chân 84 | P80 — GPIO port 8 bit 0 |
| Chân 85 | P81 — GPIO port 8 bit 1 |
| Chân 86 | P82 — GPIO port 8 bit 2 |
| Chân 87 | P83 — GPIO port 8 bit 3 |
| Chân 88 | P84 — GPIO port 8 bit 4 |
| Chân 89 | P85 — GPIO port 8 bit 5 |
| Chân 90 | P86 — GPIO port 8 bit 6 |
| Chân 91 | P87 — GPIO port 8 bit 7 |
| Chân 92 | P90 — GPIO port 9 bit 0 |
| Chân 93 | P91 — GPIO port 9 bit 1 |
| Chân 94 | P92 — GPIO port 9 bit 2 |
| Chân 95 | P93 — GPIO port 9 bit 3 |
| Chân 96 | P94 — GPIO port 9 bit 4 |
| Chân 97 | P95 — GPIO port 9 bit 5 |
| Chân 98 | P96 — GPIO port 9 bit 6 |
| Chân 99 | P97 — GPIO port 9 bit 7 |
| Chân 100 | VSS — Ground reference |
| Chân 101 | VDD — Core supply voltage |
| Chân 102 | PA0 — GPIO port A bit 0 |
| Chân 103 | PA1 — GPIO port A bit 1 |
| Chân 104 | PA2 — GPIO port A bit 2 |
| Chân 105 | PA3 — GPIO port A bit 3 |
| Chân 106 | PA4 — GPIO port A bit 4 |
| Chân 107 | PA5 — GPIO port A bit 5 |
| Chân 108 | PA6 — GPIO port A bit 6 |
| Chân 109 | PA7 — GPIO port A bit 7 |
| Chân 110 | PB0 — GPIO port B bit 0 |
| Chân 111 | PB1 — GPIO port B bit 1 |
| Chân 112 | PB2 — GPIO port B bit 2 |
| Chân 113 | PB3 — GPIO port B bit 3 |
| Chân 114 | PB4 — GPIO port B bit 4 |
| Chân 115 | PB5 — GPIO port B bit 5 |
| Chân 116 | PB6 — GPIO port B bit 6 |
| Chân 117 | PB7 — GPIO port B bit 7 |
| Chân 118 | VSS — Ground reference |
| Chân 119 | VDD — Core supply voltage |
| Chân 120 | PC0 — GPIO port C bit 0 |
| Chân 121 | PC1 — GPIO port C bit 1 |
| Chân 122 | PC2 — GPIO port C bit 2 |
| Chân 123 | PC3 — GPIO port C bit 3 |
| Chân 124 | PC4 — GPIO port C bit 4 |
| Chân 125 | PC5 — GPIO port C bit 5 |
| Chân 126 | PC6 — GPIO port C bit 6 |
| Chân 127 | PC7 — GPIO port C bit 7 |
| Chân 128 | PD0 — GPIO port D bit 0 |
| Chân 129 | PD1 — GPIO port D bit 1 |
| Chân 130 | PD2 — GPIO port D bit 2 |
| Chân 131 | PD3 — GPIO port D bit 3 |
| Chân 132 | PD4 — GPIO port D bit 4 |
| Chân 133 | PD5 — GPIO port D bit 5 |
| Chân 134 | PD6 — GPIO port D bit 6 |
| Chân 135 | PD7 — GPIO port D bit 7 |
| Chân 136 | VSS — Ground reference |
| Chân 137 | VDD — Core supply voltage |
| Chân 138 | PE0 — GPIO port E bit 0 |
| Chân 139 | PE1 — GPIO port E bit 1 |
| Chân 140 | PE2 — GPIO port E bit 2 |
| Chân 141 | PE3 — GPIO port E bit 3 |
| Chân 142 | PE4 — GPIO port E bit 4 |
| Chân 143 | PE5 — GPIO port E bit 5 |
| Chân 144 | PE6 — GPIO port E bit 6 |
Ứng dụng tiêu biểu
CY91F526KHB phù hợp cho 6 Áp dụngs: Engine Management Unit (ECU), Transmission Control Unit, Body Control Module (BCM), Central Gateway ECU, Chassis and Suspension Controller, Industrial Automotive Sub-Node.
Engine Management Unit (ECU)
The CY91F526KHB's 32-bit FR81S core, 1.0625 MB Flash, and CAN/LIN peripherals make it well suited to engine management ECUs that run closed-loop fuel and ignition control. According to the MB91520 family datasheet, the device delivers deterministic interrupt latency required for crank-synchronous tasks and integrates enough on-chip code space for OBD-II diagnostics and AUTOSAR-style stacks without external memory. Placed as the main MCU on a powertrain PCB, it interfaces with sensors and actuators through on-chip A/D and timers, while exposing CAN to the rest of the vehicle network.
Được đề xuất
Transmission Control Unit
In transmission control units, the CY91F526KHB's 1.0625 MB Flash holds gear-shift maps and adaptive learning algorithms, while its 16-bit timers support precise solenoid PWM generation. Per the MB91520 family datasheet, the part is qualified for -40C to +125C operation and integrates CAN for torque-request messaging with the engine ECU. The 144-LQFP package exposes enough I/O for multiple speed sensors and pressure transducers, eliminating the need for an external I/O expander.
Được đề xuất
Body Control Module (BCM)
Body control modules use the CY91F526KHB's CAN and LIN interfaces to bridge in-vehicle networks while controlling lighting, door locks, and wipers via its timers and GPIOs. The 1.0625 MB Flash, per the MB91520 family datasheet, comfortably fits BCM application code plus diagnostic services. Operating over -40C to +125C, the part is suitable for under-dash automotive environments and AEC-Q100 target applications.
Được đề xuất
Central Gateway ECU
As a central gateway, the CY91F526KHB's multiple CAN channels and LIN/UART ports let it route messages between powertrain, body, and chassis domains at low latency. The 32-bit FR81S core and 1.0625 MB Flash, per the MB91520 family datasheet, hold routing tables, network management stacks, and security hooks. Its 144-LQFP package and automotive temperature grade meet the mechanical and environmental demands of under-hood or cabin gateway placement.
Được đề xuất
Chassis and Suspension Controller
For chassis controllers such as ABS or electronic stability programs, the CY91F526KHB's deterministic interrupt response and 16-bit timers enable precise wheel-speed sampling and actuator control. Per the MB91520 family datasheet, the 1.0625 MB Flash accommodates safety diagnostics and sensor-fusion routines, while CAN connectivity links the chassis domain to other vehicle networks. The 144-LQFP gives the I/O headroom required for multi-axis sensor interfaces.
Được đề xuất
Industrial Automotive Sub-Node
In industrial automation contexts where automotive-grade MCUs are repurposed for harsh environments, the CY91F526KHB's -40C to +125C range, CAN/LIN, and 1.0625 MB Flash support robust sensor nodes and motor controllers. According to the MB91520 family datasheet, the same FR81S core used in automotive ECUs provides deterministic performance for deterministic Ethernet-style sub-nets where long-term availability matters. The 144-LQFP simplifies retrofit into existing FR-family designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho CY91F526KHB — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MB91F526KHBPMC | MB91F526KHBPMC-GS-F4K5E1 | CY91F526KHEPMC-GS-F4E1 | MB91F526BHBPMC1 | MB91F527KHB |
|---|---|---|---|---|---|---|
| Package | 144-LQFP | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Core Architecture | FR81S 32-bit | FR81S 32-bit | FR81S 32-bit | FR81S 32-bit | FR81S 32-bit | FR81S 32-bit |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| CAN Interface | Yes (multi-channel) | Yes | Yes | Yes | Yes | Yes |
| LIN Interface | Yes | Yes | Yes | Yes | Yes | Yes |
| Family | MB91520 | MB91520 | MB91520 | MB91520 | MB91520 | MB91520 |
Bảo phân biệt quan trọng
- High on-chip Flash density (vsMB91F526BHBPMC1)
- Pin-compatible within the MB91520 family (vsMB91F527KHB)
- Automotive temperature grade -40C to +125C (vsMB91F526KHBPMC (suffix variant))
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor next to every VDD/VSS pair on the CY91F526KHB 144-LQFP, plus a bulk 10 uF near the regulator output, to keep digital switching noise out of the analog AVCC rail. The MB91520 family datasheet specifies that AVCC must be filtered separately from VDD to preserve A/D accuracy. Estimated: at 5V supply and 80 mA active current, the MCU dissipates ~0.4 W - well within LQFP thermal limits.
Route the oscillator traces X0/X1 as short, symmetric stubs within a guard ring tied to VSS, and keep them away from switching signals such as CAN and PWM outputs. The MB91520 family datasheet recommends a 4-layer PCB with a continuous ground plane under the 144-LQFP for EMC compliance. Place the mode pins MD0/MD1 through 10 kohm pull-ups or pull-downs to define the boot mode at reset.
Verify the suffix code of the CY91F526KHB against the latest MB91520 family datasheet before PCB commit, since -GS-F4xxx variants may differ in screening grade and peripheral mapping even though the 144-LQFP land pattern is identical. Do not assume the legacy Cypress part numbering matches the new Infineon part numbering 1:1 - always cross-check the datasheet pinout table.
Thông tin tuân thủ
AEC-Q100 qualification is per the MB91520 family datasheet; confirm the exact suffix variant for production screening. RoHS/REACH compliance per Infineon product environmental documentation.
