Datasheet
Table Of Contents
- Table 1. Device summary
- 1 Introduction
- 2 Description
- 3 Functional overview
- 3.1 Architecture
- 3.2 Arm Cortex-M4 core
- 3.3 Adaptive real-time memory accelerator (ART Accelerator)
- 3.4 Memory protection unit (MPU)
- 3.5 Memories
- 3.6 Security memory management
- 3.7 Boot modes
- 3.8 Sub-GHz radio
- 3.9 Power supply management
- 3.10 Low-power modes
- 3.11 Peripheral interconnect matrix
- 3.12 Reset and clock controller (RCC)
- 3.13 General-purpose inputs/outputs (GPIOs)
- 3.14 Directly memory access controller (DMA)
- 3.15 Interrupts and events
- 3.16 Analog-to-digital converter (ADC)
- 3.17 Voltage reference buffer (VREFBUF)
- 3.18 Digital-to-analog converter (DAC)
- 3.19 Comparator (COMP)
- 3.20 True random number generator (RNG)
- 3.21 Advanced encryption standard hardware accelerator (AES)
- 3.22 Public key accelerator (PKA)
- 3.23 Timer and watchdog
- 3.24 Real-time clock (RTC), tamper and backup registers
- 3.25 Inter-integrated circuit interface (I2C)
- 3.26 Universal synchronous/asynchronous receiver transmitter (USART/UART)
- 3.27 Low-power universal asynchronous receiver transmitter (LPUART)
- 3.28 Serial peripheral interface (SPI)/integrated-interchip sound interface (I2S)
- 3.29 Development support
- 4 Pinouts, pin description and alternate functions
- 5 Electrical characteristics
- 5.1 Parameter conditions
- 5.2 Absolute maximum ratings
- 5.3 Operating conditions
- 5.3.1 Main performances
- 5.3.2 General operating conditions
- 5.3.3 Sub-GHz radio characteristics
- Table 26. Sub-GHz radio power consumption
- Table 27. Sub-GHz radio power consumption in transmit mode (SMPS ON)
- Table 28. Sub-GHz radio general specifications
- Table 29. Sub-GHz radio receive mode specifications
- Table 30. Sub-GHz radio transmit mode specifications
- Table 31. Sub-GHz radio power management specifications
- 5.3.4 Operating conditions at power-up/power-down
- 5.3.5 Embedded reset and power-control block characteristics
- 5.3.6 Embedded voltage reference
- 5.3.7 Supply current characteristics
- Typical and maximum current consumption
- Table 35. Current consumption in Run and LPRun modes, CoreMark code with data running from Flash memory, ART enable (cache ON, prefetch OFF)
- Table 36. Current consumption in Run and LPRun modes, CoreMark code with data running from SRAM1
- Table 37. Typical current consumption in Run and LPRun modes, with different codes running from Flash memory, ART enable (cache ON, prefetch OFF)
- Table 38. Typical current consumption in Run and LPRun modes, with different codes running from SRAM1
- Table 39. Current consumption in Sleep and LPSleep modes, Flash memory ON
- Table 40. Current consumption in LPSleep mode, Flash memory in power-down
- Table 41. Current consumption in Stop 2 mode
- Table 42. Current consumption in Stop 1 mode
- Table 43. Current consumption in Stop 0 mode
- Table 44. Current consumption in Standby mode
- Table 45. Current consumption in Shutdown mode
- Table 46. Current consumption in VBAT mode
- Table 47. Current under Reset condition
- I/O system current consumption
- On-chip peripheral current consumption
- Typical and maximum current consumption
- 5.3.8 Wakeup time from low-power modes and voltage scaling transition times
- 5.3.9 External clock source characteristics
- 5.3.10 Internal clock source characteristics
- 5.3.11 PLL characteristics
- 5.3.12 Flash memory characteristics
- 5.3.13 EMC characteristics
- 5.3.14 Electrical sensitivity characteristics
- 5.3.15 I/O current injection characteristics
- 5.3.16 I/O port characteristics
- 5.3.17 NRST pin characteristics
- 5.3.18 Analog switches booster
- 5.3.19 Analog-to-digital converter characteristics
- 5.3.20 Temperature sensor characteristics
- 5.3.21 VBAT monitoring characteristics
- 5.3.22 Voltage reference buffer characteristics
- 5.3.23 Digital-to-analog converter characteristics
- 5.3.24 Comparator characteristics
- 5.3.25 Timers characteristics
- 5.3.26 Communication interfaces characteristics
- 6 Package information
- 6.1 UFBGA73 package information
- Figure 26. UFBGA - 73 balls, 5 × 5 mm, ultra thin fine pitch ball grid array package outline
- Table 90. UFBGA - 73 balls, 5 × 5 mm, ultra thin fine pitch ball grid array mechanical data
- Figure 27. UFBGA - 73 balls, 5 × 5 mm, ultra thin fine pitch ball grid array recommended footprint
- Table 91. UFBGA recommended PCB design rules (0.5 mm pitch BGA)
- Device marking for UFBGA73
- 6.2 Package thermal characteristics
- 6.1 UFBGA73 package information
- 7 Ordering information
- 8 Revision history
Electrical characteristics STM32WLE5J8/JB/JC
122/135 DS13105 Rev 4
5.3.26 Communication interfaces characteristics
I
2
C interface
characteristics
The I
2
C interface meets the timings requirements of the I
2
C-bus specification and user
manual rev. 03 for:
• Standard-mode (Sm): bitrate up to 100 Kbit/s
• Fast-mode (Fm): bitrate up to 400 Kbit/s
• Fast-mode Plus (Fm+): bitrate up to 1 Mbit/s
The I
2
C timings requirements are guaranteed by design when the I2C peripheral is properly
configured (refer to the reference manual) and when the II2CCLK frequency is greater than
the minimum shown in the table below.
The SDA and SCL I/O requirements are met with the following restrictions:
• The SDA and SCL I/O pins are not “true” open-drain. When configured as open-drain,
the PMOS connected between the I/O pin and V
DDIOx
is disabled, but is still present.
• The 20 mA output drive requirement in Fast-mode Plus is partially supported. This
limits the maximum load C
load
supported in Fast-mode Plus, given by these formulas:
–t
r
(SDA/SCL) = 0.8473 x R
p
x C
load
–R
p
(min) = [V
DD
- V
OL
(max)] / I
OL
(max)
where R
p
is the I2C lines pull-up. Refer to Section 5.3.16: I/O port characteristics
for more details.
Table 83. IWDG min/max timeout period at 32 kHz (LSI)
(1)
Prescaler divider PR[2:0] bits Min timeout (RL[11:0] = 0x000) Max timeout (RL[11:0] = 0xFFF) Unit
/4 0x0 0.125 512
ms
/8 0x1 0.250 1024
/16 0x2 0.500 2048
/32 0x3 1.0 4096
/64 0x4 2.0 8192
/128 0x5 4.0 16384
/256 0x6 or 0x7 8.0 32768
1. The exact timings still depend on the phasing of the APB interface clock versus the LSI clock, hence there is always a full
RC period of uncertainty.
Table 84. Minimum I2CCLK frequency in all I2C modes
Symbol Parameter Conditions Min Unit
f
(I2CCLK)
I2CCLK frequency
Standard-mode - 2
MHz
Fast-mode
Analog filter ON, DNF = 0 8
Analog filter OFF, DNF = 1 9
Fast-mode Plus
Analog filter ON, DNF = 0 18
Analog filter OFF, DNF = 1 16