diff --git a/docs/API_reference/zh/peripherals/machine.UART.md b/docs/API_reference/zh/peripherals/machine.UART.md
index d2b8a704f5e3c3086fca11a1a85cb50497680e22..2aa92fcf328d675760ea791f1a7046986e5b02fd 100644
--- a/docs/API_reference/zh/peripherals/machine.UART.md
+++ b/docs/API_reference/zh/peripherals/machine.UART.md
@@ -40,7 +40,7 @@ class machine.UART(UART.UARTn, baudrate, databits, parity, stopbits, flowctl)
| BG95M | uart0:
TX: 引脚号23
RX: 引脚号22
uart1:
TX:引脚号27
RX:引脚号28
uart2:
TX: 引脚号64
RX: 引脚号65
uart4:
TX:引脚号35
RX:引脚号34 |
| EC600M | uart0:
TX: 引脚号71
RX: 引脚号72
uart1(flowctl = 0):
TX: 引脚号3
RX: 引脚号2
uart1(flowctl = 1):
TX: 引脚号33
RX: 引脚号34
uart2:
TX:引脚号32
RX:引脚号31 |
| EG915U | uart1:
TX: 引脚号27
RX: 引脚号28
uart2:
TX:引脚号35
RX:引脚号34
CTS:引脚号36
RTS:引脚号37
uart4:
TX:引脚号19
RX:引脚号18 |
-| EC800M/EG810M | uart0:
TX: 引脚号39
RX: 引脚号38
uart1(flowctl = 0):
TX: 引脚号50
RX: 引脚号51
uart1(flowctl = 1):
TX: 引脚号22
RX: 引脚号23
注意：EC800MCNGA 、CNGD/ EG810MCNGA 模块的 uart1 不可用
uart2:
TX:引脚号18
RX:引脚号17
uart4:
TX:引脚号29
RX:引脚号28 |
+| EC800M/EG810M | uart0:
TX: 引脚号39
RX: 引脚号38
uart1(flowctl = 0):
TX: 引脚号50
RX: 引脚号51
uart1(flowctl = 1):
TX: 引脚号22
RX: 引脚号23
注意：EC800MCNGA 、CNGB、CNGD/ EG810MCNGA、CNGB 模块的 uart1 不可用
uart2:
TX:引脚号18
RX:引脚号17
uart4:
TX:引脚号29
RX:引脚号28 |
| EG912N | uart0:
TX: 引脚号23
RX: 引脚号22
uart1(flowctl = 0):
TX: 引脚号27
RX: 引脚号28
uart1(flowctl = 1):
TX: 引脚号36
RX: 引脚号37
uart2:
TX:引脚号35
RX:引脚号34 |
| EC600E | uart0:
TX: 引脚号71
RX: 引脚号72
uart1:(EC600ECN_LE&LQ不可用)
TX:引脚号70
RX:引脚号69
uart2:
TX:引脚号32
RX:引脚号31 |
| EC800E | uart0:
TX: 引脚号39
RX: 引脚号38
uart1:
TX:引脚号29
RX:引脚号28
uart2:
TX:引脚号18
RX:引脚号17 |