ST10F273Z4 STMicroelectronics, ST10F273Z4 Datasheet - Page 177

• Manufacturer Part Number: ST10F273Z4
• Description: 16-BIT MICROCONTROLLER WITH MAC UNIT, UP TO 832 KBYTES FLASH MEMORY AND UP TO 68 KBYTES RAM
• Manufacturer: STMicroelectronics

Specifications of ST10F273Z4

• Single Voltage Supply: 5 V ±10%

ST10F273Z4
25
25.1
25.1.1
Known limitations
This section describes the functional and electrical limitations identified on the CEG silicon
revision of the ST10F273Z4.
The major revision of the device is contained in the device identification register, IDCHIP,
located at address F07Ch. For Cxx versions, IDCHIP is set to 1143h.
Functional limitations
The functional limitations identified on the ST10F273Z4 are the following:
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Injected conversion stalling the A/D converter
Description
The A/D converter is stalled and no further conversions are performed when a new injection
request is issued before the CPU reads the ADDAT2 register (that is when the CPU has not
read the result of the previous injection request).
Workarounds and recovery actions
The following actions allow to unlock the A/D converter:
1.
2.
Application conditions
This problem occurs if all the following conditions are fulfilled:
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Injected conversion stalling the A/D converter (see
stalling the A/D
Concurrent transmission requests in DAR mode (C-CAN module) (see
Concurrent transmission requests in DAR-mode (C-CAN
Disabling transmission requests (see
requests (C-CAN
Spurious BREQ pulse in slave mode during external bus arbitration phase (see
Section 25.1.4: Spurious BREQ pulse in slave mode during external bus arbitration
phase)
Executing PWRDN instructions (see
Behavior of capture/compare (CAPCOM) outputs in COMPARE mode 3 (see
Section 25.1.6: Behavior of CAPCOM outputs in COMPARE mode
Read the ADDAT2 register twice at the end of every injected conversion. This action
also prevents the ADC from being stalled.
Disable and then enable again the wait for read mode.
Injection requests are hardware triggered (via CapCom CC31).
The results of injected conversions are read by performing a PEC transfer. This
prevents from reading twice the ADDAT2 register by software.
A high level task is disabling the PEC transfer for a long time (time needed for 2 analog
conversions plus time between 2 injection requests).
converter)
module))
Section 25.1.5: Executing PWRDN
Section 25.1.3: Disabling the transmission
Section 25.1.1: Injected conversion
module))
3)
Known limitations
Section 25.1.2:
instructions)
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