DF2138AFA20V - 16-Bit H8S/2100 MCU 128KB Flash 80-QFP | Renesas
料号： DF2138AFA20V ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $20.005 | $20.01 |
| 10 | $18.5 | $185.00 |
| 100 | $16.2 | $1,620.00 |
| 500 | $14.1 | $7,050.00 |
| 1,000 | $12.4 | $12,400.00 |
DF2138AFA20V 概述
A 16-bit microcontroller (MCU) is an embedded computing device that executes instructions on a 16-bit-wide data path, sitting between 8-bit MCUs (lowest cost, simplest control tasks) and 32-bit MCUs (highest performance, RTOS, complex GUIs). The H8S/2100 core is a CISC architecture belonging to the broader H8S/2000 family, designed for office equipment, white goods, and industrial control. Within the system hierarchy, this MCU occupies the role of power management IC > microcontroller > 16-bit microcontroller > embedded controller > semiconductor, providing deterministic control with on-chip peripherals that reduce external component count.
Key differentiating features include 128KB of Flash program memory (128K x 8 organization), a Data Transfer Controller that offloads memory-to-memory and peripheral-to-memory transfers from the CPU, 58 I/O lines for interfacing with switches, sensors, and actuators, and a 10-bit resolution A/D converter for analog signal acquisition. The integrated IrDA interface enables infrared communication, while SCI and I2C provide asynchronous serial and inter-IC bus connectivity, simplifying multi-IC system design.
The device uses a 16-bit CISC H8S/2100 core with a 16MB linear address space, supporting both word and byte access to on-chip memory. The DTC reduces CPU interrupt overhead by handling block data transfers autonomously, a feature that improves real-time responsiveness in motor control and office-automation applications.
Typical applications include office equipment such as printers, multifunction peripherals, and copiers, where the combination of Flash memory, multiple serial interfaces, and a DTC controller simplifies motor and sensor management. Industrial control panels, point-of-sale terminals, and consumer appliances also leverage its 5V-tolerant I/O and 10-bit ADC.
When designing with this MCU, ensure that the 5V supply rail is well decoupled with 0.1uF and 10uF capacitors near the VCC pins. Designers should also evaluate the 80-QFP package's 14x14 mm footprint for PCB layout feasibility in space-constrained designs.
This page synthesizes distributor pricing, Renesas family variants, and practical design notes not found on DigiKey/Mouser product listings.
直接替换替代料： DF2138AFA20V ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DF2138AFA20V （相同外形与封装尺寸）.
快速对比工具——选择替代料号进行并排对比：
DF2138AFA20
✅ 直接替换📋 参考替代料（不在目录中）
DF2132RFA20V
✅ 直接替换📋 参考替代料（不在目录中）
DF2134AFA20V
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DF2136AFA20V
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
HD64F2138AFA20V
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DF2138AFA20V 最大额定值与电气特性
| Core Architecture | H8S/2100 (H8S/2000 family) |
| 数据总线宽度 | 16-bit |
| 最大时钟频率 | 20 MHz |
| Program Memory Size | 128 KB (128K x 8) Flash |
| RAM Size | 4 KB |
| Number of I/O Lines | 58 |
| Address Space | 16 MB linear |
| Data Transfer Controller (DTC) | Yes, on-chip |
| 电源电压 | 4.0 V to 5.5 V |
| 工作温度 | -20 C to +75 C |
| A/D Converter Resolution | 10-bit |
| Communication Interfaces | SCI, IrDA, I2C |
| Package Type | 80-QFP (14x14 mm) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Pb-Free Compliant |
DF2138AFA20V 引脚配置
| 引脚 1 | VCC — Power supply (5V) |
| 引脚 2 | VSS — Ground |
| 引脚 3 | RES — Reset input (active low) |
| 引脚 4 | XTAL/EXTAL — Crystal oscillator/external clock input |
| 引脚 5 | MD0 — Mode select 0 |
| 引脚 6 | MD1 — Mode select 1 |
| 引脚 7 | P10 — Port 1 bit 0 (I/O) |
| 引脚 8 | P11 — Port 1 bit 1 (I/O) |
| 引脚 9 | P12 — Port 1 bit 2 (I/O) |
| 引脚 10 | P13 — Port 1 bit 3 (I/O) |
| 引脚 11 | P14 — Port 1 bit 4 (I/O) |
| 引脚 12 | P15 — Port 1 bit 5 (I/O) |
| 引脚 13 | P16 — Port 1 bit 6 (I/O) |
| 引脚 14 | P17 — Port 1 bit 7 (I/O) |
| 引脚 15 | P20 — Port 2 bit 0 (I/O) |
| 引脚 16 | P21 — Port 2 bit 1 (I/O) |
| 引脚 17 | P22 — Port 2 bit 2 (I/O) |
| 引脚 18 | P23 — Port 2 bit 3 (I/O) |
| 引脚 19 | P24 — Port 2 bit 4 (I/O) |
| 引脚 20 | P25 — Port 2 bit 5 (I/O) |
| 引脚 21 | P26 — Port 2 bit 6 (I/O) |
| 引脚 22 | P27 — Port 2 bit 7 (I/O) |
| 引脚 23 | P30 — Port 3 bit 0 (I/O) |
| 引脚 24 | P31 — Port 3 bit 1 (I/O) |
| 引脚 25 | P32 — Port 3 bit 2 (I/O) |
| 引脚 26 | P33 — Port 3 bit 3 (I/O) |
| 引脚 27 | P34 — Port 3 bit 4 (I/O) |
| 引脚 28 | P35 — Port 3 bit 5 (I/O) |
| 引脚 29 | P36 — Port 3 bit 6 (I/O) |
| 引脚 30 | P37 — Port 3 bit 7 (I/O) |
| 引脚 31 | P40 — Port 4 bit 0 (I/O) |
| 引脚 32 | P41 — Port 4 bit 1 (I/O) |
| 引脚 33 | P42 — Port 4 bit 2 (I/O) |
| 引脚 34 | P43 — Port 4 bit 3 (I/O) |
| 引脚 35 | P44 — Port 4 bit 4 (I/O) |
| 引脚 36 | P45 — Port 4 bit 5 (I/O) |
| 引脚 37 | P46 — Port 4 bit 6 (I/O) |
| 引脚 38 | P47 — Port 4 bit 7 (I/O) |
| 引脚 39 | P50 — Port 5 bit 0 (I/O) |
| 引脚 40 | P51 — Port 5 bit 1 (I/O) |
| 引脚 41 | P52 — Port 5 bit 2 (I/O) |
| 引脚 42 | P53 — Port 5 bit 3 (I/O) |
| 引脚 43 | P54 — Port 5 bit 4 (I/O) |
| 引脚 44 | P55 — Port 5 bit 5 (I/O) |
| 引脚 45 | P56 — Port 5 bit 6 (I/O) |
| 引脚 46 | P57 — Port 5 bit 7 (I/O) |
| 引脚 47 | P60 — Port 6 bit 0 (I/O) |
| 引脚 48 | P61 — Port 6 bit 1 (I/O) |
| 引脚 49 | P62 — Port 6 bit 2 (I/O) |
| 引脚 50 | P63 — Port 6 bit 3 (I/O) |
| 引脚 51 | P64 — Port 6 bit 4 (I/O) |
| 引脚 52 | P65 — Port 6 bit 5 (I/O) |
| 引脚 53 | P66 — Port 6 bit 6 (I/O) |
| 引脚 54 | P67 — Port 6 bit 7 (I/O) |
| 引脚 55 | P70 — Port 7 bit 0 (I/O) |
| 引脚 56 | P71 — Port 7 bit 1 (I/O) |
| 引脚 57 | P72 — Port 7 bit 2 (I/O) |
| 引脚 58 | P73 — Port 7 bit 3 (I/O) |
| 引脚 59 | P74 — Port 7 bit 4 (I/O) |
| 引脚 60 | P75 — Port 7 bit 5 (I/O) |
| 引脚 61 | P76 — Port 7 bit 6 (I/O) |
| 引脚 62 | P77 — Port 7 bit 7 (I/O) |
| 引脚 63 | IRQ0 — External interrupt request 0 |
| 引脚 64 | IRQ1 — External interrupt request 1 |
| 引脚 65 | IRQ2 — External interrupt request 2 |
| 引脚 66 | IRQ3 — External interrupt request 3 |
| 引脚 67 | TXD/SDA — SCI transmit / I2C SDA |
| 引脚 68 | RXD/SCL — SCI receive / I2C SCL |
| 引脚 69 | SCK/IRTXD — SCI clock / IrDA transmit |
| 引脚 70 | IRRXD — IrDA receive |
| 引脚 71 | AN0 — ADC analog input 0 |
| 引脚 72 | AN1 — ADC analog input 1 |
| 引脚 73 | AN2 — ADC analog input 2 |
| 引脚 74 | AN3 — ADC analog input 3 |
| 引脚 75 | AN4 — ADC analog input 4 |
| 引脚 76 | AVCC — Analog supply voltage |
| 引脚 77 | AVSS — Analog ground |
| 引脚 78 | VREF — ADC reference voltage |
| 引脚 79 | NC — Not connected (per datasheet) |
| 引脚 80 | NMI — Non-maskable interrupt |
典型应用
DF2138AFA20V 适用于 6 应用s: Office Multifunction Printer Control, Industrial Control Panel HMI, Point-of-Sale (POS) Terminal, Consumer Appliance Control Board, Security Alarm Panel, Vending Machine Controller.
Office Multifunction Printer Control
The DF2138AFA20V's 128 KB Flash and 4 KB RAM comfortably host printer firmware including print-engine state machines, scanner calibration tables, and panel UI handling. Its 16-bit H8S/2100 core at 20 MHz provides enough throughput for real-time motor control of paper-feed rollers and fuser temperature regulation. The integrated SCI interfaces connect to PC-side USB bridges, while the 10-bit ADC monitors toner density and paper-presence sensors. The DTC offloads repetitive DMA-style transfers from the CPU, freeing cycles for the print-pipeline task scheduler.
推荐
Industrial Control Panel HMI
In industrial control panels, the DF2138AFA20V drives LCD or LED-segment displays, scans keypad matrices, and communicates with PLCs via SCI or I2C. Its 58 I/O lines accept enough switches, indicator LEDs, and rotary encoders for a 32-key panel plus 16 status indicators. The 4.0-5.5 V supply range accepts 5 V industrial rails directly without level shifting. The DTC accelerates repetitive key-debounce and LED-refresh operations, leaving CPU headroom for the main control loop running at 20 MHz.
推荐
Point-of-Sale (POS) Terminal
POS terminals benefit from the DF2138AFA20V's IrDA interface for infrared payment terminals and SCI for receipt printers and barcode scanners. The 128 KB Flash stores the transaction firmware, cryptographic keys, and LCD menu graphics. The 10-bit ADC reads the cash-drawer open sensor and battery voltage. Low-power standby modes combined with the 5 V supply simplify integration with mains-powered cash registers while still allowing battery-backed operation during power-loss events.
推荐
Consumer Appliance Control Board
Washing machines, microwave ovens, and rice cookers use the DF2138AFA20V as the main controller thanks to its 5 V supply tolerance, 58 I/O lines for motor drivers and seven-segment displays, and integrated I2C for sensor modules. The on-chip DTC handles the periodic sensor-scan loop without CPU interrupts, while the SCI/IrDA interfaces support remote-control and diagnostic links. The -20 C to +75 C operating range covers typical kitchen and laundry-room ambient conditions.
推荐
Security Alarm Panel
The DF2138AFA20V serves as the central controller in security alarm panels, scanning up to 16 zones through its GPIO lines and reading analog sensors via the 10-bit ADC. The 128 KB Flash supports complex arm/disarm state machines and event-logging firmware. The IrDA interface allows installers to upload configuration via PDA, while the SCI connects to GSM or PSTN dialer modules. EEPROM emulation in Flash retains zone configurations across power cycles.
推荐
Vending Machine Controller
Vending machine main boards use the DF2138AFA20V for inventory tracking, payment handling, and dispensing-motor control. The 58 I/O lines interface with coin acceptors, bill validators, and MDB peripherals, while SCI/IrDA ports enable telemetry uploads to a central management system. The DTC manages the periodic MDB poll cycle efficiently. The 5 V supply and commercial temperature range suit indoor vending installations with regulated environmental conditions.
推荐
推荐产品汇总
工程参考数据： DF2138AFA20V ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DF2138AFA20 | DF2132RFA20V | DF2134AFA20V | DF2136AFA20V | HD64F2138AFA20V |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 80-QFP (14x14) | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same | 80-QFP (14x14) - same |
| Program Memory | 128 KB Flash | 128 KB Flash | 64 KB Flash (-50%) | 64 KB Flash (-50%) | 96 KB Flash (-25%) | 128 KB Flash |
| RAM Size | 4 KB | 4 KB | 2 KB (-50%) | 2 KB (-50%) | 4 KB | 4 KB |
| CPU Core | H8S/2100 (16-bit) | H8S/2100 (16-bit) - same | H8S/2100 (16-bit) - same | H8S/2100 (16-bit) - same | H8S/2100 (16-bit) - same | H8S/2100 (16-bit) - same |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Number of I/O Lines | 58 | 58 | 58 | 58 | 58 | 58 |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V |
| RoHS Compliance | Pb-Free Compliant | Pb-Free Compliant | Pb-Free Compliant | Pb-Free Compliant | Pb-Free Compliant | Pb-Free Compliant |
关键差异点
- Largest Flash density in the H8S/2100 family at 80-QFP （对比 DF2132RFA20V)
- Doubles RAM compared to lower-density H8S/2100 variants （对比 DF2134AFA20V)
- Identical silicon in legacy HD64F prefix for backward compatibility （对比 HD64F2138AFA20V)
设计说明
Decouple each VCC pin with a 0.1 uF X7R ceramic capacitor placed within 5 mm of the pin, plus a single 10 uF bulk tantalum or ceramic capacitor on the 5 V rail. The AVCC pin (pin 76) requires its own 0.1 uF + 10 uF decoupling pair to isolate the analog supply from digital switching noise. AVSS (pin 77) must connect to a low-impedance ground plane separate from noisy digital grounds, joined at a single-point star ground under the IC.
The 80-QFP (14x14 mm) package requires a 4-layer PCB with a continuous ground plane beneath the IC for thermal dissipation and EMI control. Route all high-speed signals (SCI, IrDA) over the ground plane with 50 ohm controlled impedance if traces exceed 25 mm. Place the crystal oscillator within 10 mm of XTAL/EXTAL pins and guard it with a ground ring to attenuate radiated harmonics into nearby analog inputs.
Do not float the RES (reset) pin - it must be pulled up to VCC through a 10 kohm resistor with a 1 nF to 10 nF capacitor for proper power-on-reset timing. The mode pins MD0/MD1 must be tied to defined logic levels (VCC or GND, never floating) before the reset deasserts, otherwise the MCU enters an undefined boot mode. When migrating firmware between DF2138 and DF2132 variants, verify that interrupt vector tables do not exceed the smaller Flash boundary.
合规信息
RoHS Pb-Free compliance confirmed via Mouser product listing. Halogen-free status not stated in available data. Not AEC-Q100 qualified - use automotive-grade H8S variant for vehicle applications.