Changes in 6746d30: f133

				Board-dat/MPC/MPC1108-dat/MPC1108-dat.md
			
          @@ -16,7 +16,7 @@ https://www.electrodragon.com/product/smart-fan-cooling-control-board-for-raspbe

           - NAND gate use [[logic-gate-dat]] 

           - LM temperature Limit ALRAM (NAND_A)

          -- GPIO12 (NAND_B either gate ) - [[RPI-pin-dat]]

          +- GPIO12 (NAND_B either gate ) - [[RPI-pin-dat]] - [[rpi-python-dat]]

           - Manual switch (NAND_B either gate )

				Chip-cn-dat/allwinner-dat/F133-dat/F133-dat.md
			
          @@ -115,13 +115,11 @@ image == https://github.com/ylyamin/allwinner_d1_hal

           - [[allwinner-dat]] - [[allwinner-D1-dat]]

          -- [[flash-dat]]

          -

           - [[dongshanpi-dat]]

           - [[F133]] - [[allwinner]]

          -- [[memory-dat]]

          +- [[memory-dat]] - [[flash-dat]]

           - [[ethernet-dat]]

				Tech-dat/memory-dat/flash-dat/flash-dat.md
			
          @@ -15,19 +15,19 @@ NOR flash is a type of non-volatile memory that allows random read access. It is

           ## Comparison Table

          -| Feature              | Parallel NOR Flash         | SPI NOR Flash (SPI Flash)       |

          -|----------------------|----------------------------|----------------------------------|

          -| **Interface**        | Parallel (8/16-bit bus)    | Serial (SPI: MOSI, MISO, SCLK)  |

          -| **Speed**            | High (fast random access)  | Lower (due to serial nature)    |

          -| **Pins Required**    | Many (20+ pins)            | Few (4–6 pins)                  |

          -| **Physical Size**    | Larger                     | Smaller                         |

          -| **Cost**             | More expensive             | Cheaper                         |

          -| **Power Consumption**| Higher                     | Lower                           |

          -| **Read Access**      | Random access (byte-wise)  | Page-based, sequential access   |

          -| **Write Access**     | Sector/page erase/write    | Sector/page erase/write         |

          -| **XIP Support**      | Yes (native)               | Limited or requires mapping     |

          -| **Use Cases**        | Boot code, firmware (MCUs, routers) | Microcontrollers, IoT, sensors |

          -| **Typical Capacity** | Up to 512 MB               | Up to 2 GB                      |

          +| Feature               | Parallel NOR Flash                  | SPI NOR Flash (SPI Flash)      |

          +| --------------------- | ----------------------------------- | ------------------------------ |

          +| **Interface**         | Parallel (8/16-bit bus)             | Serial (SPI: MOSI, MISO, SCLK) |

          +| **Speed**             | High (fast random access)           | Lower (due to serial nature)   |

          +| **Pins Required**     | Many (20+ pins)                     | Few (4–6 pins)                 |

          +| **Physical Size**     | Larger                              | Smaller                        |

          +| **Cost**              | More expensive                      | Cheaper                        |

          +| **Power Consumption** | Higher                              | Lower                          |

          +| **Read Access**       | Random access (byte-wise)           | Page-based, sequential access  |

          +| **Write Access**      | Sector/page erase/write             | Sector/page erase/write        |

          +| **XIP Support**       | Yes (native)                        | Limited or requires mapping    |

          +| **Use Cases**         | Boot code, firmware (MCUs, routers) | Microcontrollers, IoT, sensors |

          +| **Typical Capacity**  | Up to 512 MB                        | Up to 2 GB                     |

           ---

          @@ -42,3 +42,48 @@ NOR flash is a type of non-volatile memory that allows random read access. It is

           ![](2025-08-07-12-50-03.png)

          +

          +## SPI Nor VS. NAND Flash 

          +

          +### ✅ Summary Table

          +

          +| Feature           | SPI NOR       | SPI NAND            |

          +| ----------------- | ------------- | ------------------- |

          +| Capacity          | Low to medium | Medium to very high |

          +| Random read speed | ✅ Fast        | ❌ Slower            |

          +| Write/erase speed | ❌ Slower      | ✅ Faster            |

          +| Reliability       | ✅ High        | ❌ Needs ECC         |

          +| Bootable (XIP)    | ✅ Yes         | ❌ No                |

          +| Cost per bit      | ❌ Higher      | ✅ Lower             |

          +

          +---

          +

          +### TL;DR

          +

          +- 🧠 **SPI NOR Flash** = small, reliable, fast reads → great for firmware.

          +- 📦 **SPI NAND Flash** = large, cheaper, needs ECC → great for data storage.

          +

          +

          +## 📦 Common Winbond SPI NOR Flash Models

          +

          +Winbond's SPI NOR flash chips are usually labeled **W25Q** or **W25X** series.  

          +They vary by **capacity**, **voltage**, **speed**, and **features** like Dual/Quad SPI.

          +

          +---

          +

          +### 🧰 Common W25Q Series (Most Popular)

          +

          +| Model         | Capacity | Voltage | Features                     |

          +|---------------|----------|---------|------------------------------|

          +| **W25Q16JV**  | 16 Mbit  | 2.7–3.6V| Standard SPI, Dual/Quad SPI  |

          +| **W25Q32JV**  | 32 Mbit  | 2.7–3.6V| Very popular, common in MCUs |

          +| **W25Q64JV**  | 64 Mbit  | 2.7–3.6V| Standard/Dual/Quad SPI       |

          +| **W25Q128JV** | 128 Mbit | 2.7–3.6V| XIP, dual/quad SPI support   |

          +| **W25Q256JV** | 256 Mbit | 2.7–3.6V| Larger firmware/data storage |

          +

          +

          +

          +

          +## ref 

          +

          +- [[flash-dat]]

          \ No newline at end of file

...	...	@@ -115,13 +115,11 @@ image == https://github.com/ylyamin/allwinner_d1_hal
115	115
116	116	- [[allwinner-dat]] - [[allwinner-D1-dat]]
117	117
118		-- [[flash-dat]]
119		-
120	118	- [[dongshanpi-dat]]
121	119
122	120	- [[F133]] - [[allwinner]]
123	121
124		-- [[memory-dat]]
	122	+- [[memory-dat]] - [[flash-dat]]
125	123
126	124	- [[ethernet-dat]]
127	125

...	...	@@ -16,7 +16,7 @@ https://www.electrodragon.com/product/smart-fan-cooling-control-board-for-raspbe
16	16	- NAND gate use [[logic-gate-dat]]
17	17
18	18	- LM temperature Limit ALRAM (NAND_A)
19		-- GPIO12 (NAND_B either gate ) - [[RPI-pin-dat]]
	19	+- GPIO12 (NAND_B either gate ) - [[RPI-pin-dat]] - [[rpi-python-dat]]
20	20	- Manual switch (NAND_B either gate )
21	21
22	22

...	...	@@ -15,19 +15,19 @@ NOR flash is a type of non-volatile memory that allows random read access. It is
15	15
16	16	## Comparison Table
17	17
18		-\| Feature \| Parallel NOR Flash \| SPI NOR Flash (SPI Flash) \|
19		-\|----------------------\|----------------------------\|----------------------------------\|
20		-\| Interface \| Parallel (8/16-bit bus) \| Serial (SPI: MOSI, MISO, SCLK) \|
21		-\| Speed \| High (fast random access) \| Lower (due to serial nature) \|
22		-\| Pins Required \| Many (20+ pins) \| Few (4–6 pins) \|
23		-\| Physical Size \| Larger \| Smaller \|
24		-\| Cost \| More expensive \| Cheaper \|
25		-\| Power Consumption\| Higher \| Lower \|
26		-\| Read Access \| Random access (byte-wise) \| Page-based, sequential access \|
27		-\| Write Access \| Sector/page erase/write \| Sector/page erase/write \|
28		-\| XIP Support \| Yes (native) \| Limited or requires mapping \|
29		-\| Use Cases \| Boot code, firmware (MCUs, routers) \| Microcontrollers, IoT, sensors \|
30		-\| Typical Capacity \| Up to 512 MB \| Up to 2 GB \|
	18	+\| Feature \| Parallel NOR Flash \| SPI NOR Flash (SPI Flash) \|
	19	+\| --------------------- \| ----------------------------------- \| ------------------------------ \|
	20	+\| Interface \| Parallel (8/16-bit bus) \| Serial (SPI: MOSI, MISO, SCLK) \|
	21	+\| Speed \| High (fast random access) \| Lower (due to serial nature) \|
	22	+\| Pins Required \| Many (20+ pins) \| Few (4–6 pins) \|
	23	+\| Physical Size \| Larger \| Smaller \|
	24	+\| Cost \| More expensive \| Cheaper \|
	25	+\| Power Consumption \| Higher \| Lower \|
	26	+\| Read Access \| Random access (byte-wise) \| Page-based, sequential access \|
	27	+\| Write Access \| Sector/page erase/write \| Sector/page erase/write \|
	28	+\| XIP Support \| Yes (native) \| Limited or requires mapping \|
	29	+\| Use Cases \| Boot code, firmware (MCUs, routers) \| Microcontrollers, IoT, sensors \|
	30	+\| Typical Capacity \| Up to 512 MB \| Up to 2 GB \|
31	31
32	32	---
33	33
...	...	@@ -42,3 +42,48 @@ NOR flash is a type of non-volatile memory that allows random read access. It is
42	42
43	43	![](2025-08-07-12-50-03.png)
44	44
	45	+
	46	+## SPI Nor VS. NAND Flash
	47	+
	48	+### ✅ Summary Table
	49	+
	50	+\| Feature \| SPI NOR \| SPI NAND \|
	51	+\| ----------------- \| ------------- \| ------------------- \|
	52	+\| Capacity \| Low to medium \| Medium to very high \|
	53	+\| Random read speed \| ✅ Fast \| ❌ Slower \|
	54	+\| Write/erase speed \| ❌ Slower \| ✅ Faster \|
	55	+\| Reliability \| ✅ High \| ❌ Needs ECC \|
	56	+\| Bootable (XIP) \| ✅ Yes \| ❌ No \|
	57	+\| Cost per bit \| ❌ Higher \| ✅ Lower \|
	58	+
	59	+---
	60	+
	61	+### TL;DR
	62	+
	63	+- 🧠 SPI NOR Flash = small, reliable, fast reads → great for firmware.
	64	+- 📦 SPI NAND Flash = large, cheaper, needs ECC → great for data storage.
	65	+
	66	+
	67	+## 📦 Common Winbond SPI NOR Flash Models
	68	+
	69	+Winbond's SPI NOR flash chips are usually labeled W25Q or W25X series.
	70	+They vary by capacity, voltage, speed, and features like Dual/Quad SPI.
	71	+
	72	+---
	73	+
	74	+### 🧰 Common W25Q Series (Most Popular)
	75	+
	76	+\| Model \| Capacity \| Voltage \| Features \|
	77	+\|---------------\|----------\|---------\|------------------------------\|
	78	+\| W25Q16JV \| 16 Mbit \| 2.7–3.6V\| Standard SPI, Dual/Quad SPI \|
	79	+\| W25Q32JV \| 32 Mbit \| 2.7–3.6V\| Very popular, common in MCUs \|
	80	+\| W25Q64JV \| 64 Mbit \| 2.7–3.6V\| Standard/Dual/Quad SPI \|
	81	+\| W25Q128JV \| 128 Mbit \| 2.7–3.6V\| XIP, dual/quad SPI support \|
	82	+\| W25Q256JV \| 256 Mbit \| 2.7–3.6V\| Larger firmware/data storage \|
	83	+
	84	+
	85	+
	86	+
	87	+## ref
	88	+
	89	+- [[flash-dat]]
...	...	\ No newline at end of file