STM32100B-EVAL STMicroelectronics, STM32100B-EVAL Datasheet - Page 24

• Manufacturer Part Number: STM32100B-EVAL
• Description: MCU, MPU & DSP Development Tools STM32 ARM Value Line Eval Board
• Manufacturer: STMicroelectronics

Specifications of STM32100B-EVAL

• Processor To Be Evaluated: STM32F100VB
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB, I2C, SPI, USART
• Operating Supply Voltage: 3.3 V
• Silicon Manufacturer: ST Micro
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: STM32
• Silicon Family Name: STM32F1xx
• Kit Contents: Board
• Features: IrDA Transceiver,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Limitations
4
4.1
4.2
4.3
Note:
4.4
4.5
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Limitations
The MB871 board is delivered with PCB revision A or B. The PCB version is mentioned on
the bottom right corner of the board. Both versions of PCB are fully compatible in
configuration by default but several limitations on the PCB rev A are removed on PCB rev B.
All PCB rev A limitations are explained in this chapter.
Boot switches
On PCB rev A, boot switches SW1 and SW2 are not referenced on the silkscreen. SW1
(Boot1) switch is located in the right position on the board and SW2 (Boot0) in left position.
PE14, PB14 and PA10 usage
When a daughterboard is connected to CN4, CN5 (extension connectors) if PE14, PB14 or
PA10 are used on the daughterboard it is not possible to disconnect the signals assigned to
these I/Os on the motherboard (MB871 rev A). On PCB rev B 0Ω resistors are placed on
these signals allowing them to be disconnected when these I/O are used on the
daughterboard.
Table 20.
Jumper JP3
On PCB rev A, JP3 can connect VBAT to PC1 with a jumper for battery voltage
measurement using ADC_IN11. JP3 jumper must not be used to avoid unexpected current
consumption on the battery when the board is not powered.
The pin headers are removed to forbid jumper connection on JP3.
Audio amplifier volume
The volume of the sound is limited since the audio amplifier gain is lower than on rev B. On
PCB rev A R1 (100 KΩ) is replaced by 22 KΩ and C1 (110 pF) is replaced by 330 pF.
IDD standby measurement
On PCB rev B it is possible to use jumper JP12 to connect IDD_CNT_EN (PE14) to Anti-
tamper (PC13) to allow IDD measurement when the MCU is in standby (using the RTC
alarm feature). This feature is not supported on PCB rev A as JP12 does not exist.
Missing resistors on PCB rev A
Resistor
R115
R116
R117
Doc ID 16533 Rev 2
Signal name
PB14
PE14
PA10
UM0841