diff --git a/flashchips.c b/flashchips.c
index 595df9b..f9f04a8 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -19519,6 +19519,54 @@
 	},
 
 	{
+		.vendor		= "Winbond",
+		.name		= "W25R512NW/W74M51NW",
+		.bustype	= BUS_SPI,
+		.manufacture_id	= WINBOND_NEX_ID,
+		.model_id	= WINBOND_NEX_W25R512NW,
+		.total_size	= 65536,
+		.page_size	= 256,
+		/* supports SFDP */
+		/* OTP: 3X256B; read 0x48; write 0x42, erase 0x44, read ID 0x4B */
+		.feature_bits	= FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_4BA,
+		.tested		= TEST_OK_PREW,
+		.probe		= probe_spi_rdid,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { {4 * 1024, 16384} },
+				.block_erase = spi_block_erase_21,
+			}, {
+				.eraseblocks = { {4 * 1024, 16384} },
+				.block_erase = spi_block_erase_20,
+			}, {
+				.eraseblocks = { {32 * 1024, 2048} },
+				.block_erase = spi_block_erase_52,
+			}, {
+				.eraseblocks = { {64 * 1024, 1024} },
+				.block_erase = spi_block_erase_dc,
+			}, {
+				.eraseblocks = { {64 * 1024, 1024} },
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {64 * 1024 * 1024, 1} },
+				.block_erase = spi_block_erase_60,
+			}, {
+				.eraseblocks = { {64 * 1024 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			}
+		},
+		.printlock	= spi_prettyprint_status_register_bp3_srwd,
+		.unlock		= spi_disable_blockprotect,
+		.write		= spi_chip_write_256,
+		.read		= spi_chip_read,
+		.voltage	= {1700, 1950},
+		.prepare_access	= spi_prepare_io,
+		.finish_access	= spi_finish_io,
+	},
+
+	{
 		.vendor         = "Winbond",
 		.name           = "W25Q512NW-IM",
 		.bustype        = BUS_SPI,