BL604E-20-Q2I
Bouffalo Lab · BL602/BL604 Series
In production
32 bit · RV32IMAFC
Max clock
192MHz
SRAM
276KB
On-chip Flash
2048KB
Active current
—
Sleep current
—
Supply voltage
2.1–3.63V
Overview
BL604E-20-Q2I is a Bouffalo Lab-bit RISC-V MCU from 32, built on the SiFive SiFive E24 core (RV32IMAFC), with a maximum clock of 192 MHz, 276 KB of on-chip SRAM, and 2048 KB KB of Flash.
Core and memory
| Vendor | Bouffalo Lab（Chinese mainland） |
|---|---|
| IP brand / origin | SiFive（United States） |
| Core | SiFive E24 |
| ISA / bit width | RV32IMAFC · 32 bit |
| Max clock | 192 MHz |
| SRAM | 276 KB |
| On-chip Flash | 2048 KB |
| OTP | 0.125 KB |
| Cache | 32 KB |
Power and electrical
Active current
—
Sleep current
—
Standby / shutdown
—
Conditions and notes: The vendor or source notes are in Chinese in the original 数据手册未给 Run/Deep-sleep 电流；官方产品页仅给“系统联网待机约 40µA”（Wi-Fi DTIM，非 RTC deep-sleep）。RF：WLAN RX 39mA/TX 310mA，BLE RX 31mA/TX 133mA（3V DC/DC）。
| Supply voltage | 2.1–3.63 V |
|---|---|
| Operating temperature | -30 ℃ ~ 85 ℃ |
Peripherals and interfaces
| UART / USART | 2 way |
|---|---|
| SPI | 1 way |
| I²C | 1 way |
| BLE | 1 way |
| Wi-Fi | 1 way |
| SDIO | 1 way |
| DMA | 4 way |
| ADC | 12 channels · 12 bit |
| DAC | 2 channels |
| PWM | 5 channels |
| Other | The vendor or source notes are in Chinese in the original 1x SDIO 2.0 slave，IR remote，2x ACOMP，PIR，16/23 GPIO |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original Wi-Fi 4 (802.11b/g/n) + BLE 5.0（不支持 2M/Coded PHY）；无 USB；276KB RAM/128KB ROM；温度 -30~85°C 为多芯片 SiP（含 Flash）限值。QFN40，23 GPIO，2MB SiP Flash（BL604 为增强型）。