ESP8685H4 Part Review

adrian95

adrian95

Fix pin 29 to GND/EP and add datasheet-backed pin descriptions and pin types.

flux

I’ll update the terminal metadata from the Espressif pin table: rename pin 29 to GND/EP, set pin types, and add concise datasheet-backed pin descriptions, then verify the changes.

flux

Pin 29 is now labeled GND/EP; I’m applying the datasheet pin descriptions and electrical pin types next.

flux

Completed and verified the pin metadata update.
Open items:
  • None for this request.
Suggested next steps:
  1. Optionally update the Datasheet URL to the official Espressif PDF.
  2. Optionally change package metadata to QFN28 (4x4 mm).
  3. Optionally refine part type/subtype from generic logic IC to wireless MCU/RF SoC.
Update metadata and review
Update datasheet URL
Fix package metadata
Refine part subtype
Run final review
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Files

Pins

Symbol

Layout

Preview

XTAL_N
Pin Number
25
XTAL_P
Pin Number
26
GPIO18
Pin Number
21
GPIO3
Pin Number
8
MTDI
Pin Number
10
VDD_SPI
Pin Number
18
LNA_IN
Pin Number
1
GPIO9
Pin Number
15
VDDA_2
Pin Number
28
MTCK
Pin Number
12
MTDO
Pin Number
13
GPIO19
Pin Number
22
MTMS
Pin Number
9
XTAL_32K_P
Pin Number
4
GPIO10
Pin Number
16
VDDA_1
Pin Number
27
CHIP_EN
Pin Number
7
U0RXD
Pin Number
23
NC_2
Pin Number
20
XTAL_32K_N
Pin Number
5
GPIO8
Pin Number
14
GND/EP
Pin Number
29
VDD3P3_RTC
Pin Number
11
VDD3P3_CPU
Pin Number
17
VDD3P3_2
Pin Number
3
VDD3P3_1
Pin Number
2
GPIO2
Pin Number
6
U0TXD
Pin Number
24
NC_1
Pin Number
19
Name
Pin #
Type
Part Type
Pin Description
Pin Orientation
LNA_IN
1
Bi-Directional
Terminal
RF input and output.
VDD3P3_1
2
Power In
Terminal
Analog power supply.
Top
VDD3P3_2
3
Power In
Terminal
Analog power supply.
Top
XTAL_32K_P
4
Bi-Directional
Terminal
GPIO0, ADC1_CH0, XTAL_32K_P; VDD3P3_RTC power domain.
XTAL_32K_N
5
Bi-Directional
Terminal
GPIO1, ADC1_CH1, XTAL_32K_N; VDD3P3_RTC power domain.
GPIO2
6
Bi-Directional
Terminal
GPIO2, ADC1_CH2, FSPIQ; VDD3P3_RTC power domain.
CHIP_EN
7
Input
Terminal
Chip enable input; High enables chip, Low powers off. Do not leave floating.
GPIO3
8
Bi-Directional
Terminal
GPIO3, ADC1_CH3; VDD3P3_RTC power domain.
MTMS
9
Bi-Directional
Terminal
GPIO4, ADC1_CH4, FSPIHD, MTMS; VDD3P3_RTC power domain.
MTDI
10
Bi-Directional
Terminal
GPIO5, ADC2_CH0, FSPIWP, MTDI; VDD3P3_RTC power domain.
VDD3P3_RTC
11
Power In
Terminal
Input power supply for RTC.
Top
MTCK
12
Bi-Directional
Terminal
GPIO6, FSPICLK, MTCK; VDD3P3_CPU power domain.
MTDO
13
Bi-Directional
Terminal
GPIO7, FSPID, MTDO; VDD3P3_CPU power domain.
GPIO8
14
Bi-Directional
Terminal
GPIO8; VDD3P3_CPU power domain.
GPIO9
15
Bi-Directional
Terminal
GPIO9; VDD3P3_CPU power domain.
GPIO10
16
Bi-Directional
Terminal
GPIO10, FSPICS0; VDD3P3_CPU power domain.
VDD3P3_CPU
17
Power In
Terminal
Input power supply for CPU IO.
Top
VDD_SPI
18
Power In
Terminal
VDD_SPI power pin for internal use only.
Top

ESP8685H4

ESP8685H4 thumbnail