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STR912FAM42X6T Datasheet(PDF) 2 Page - STMicroelectronics

Part # STR912FAM42X6T
Description  ARM966E-S??16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR912FAM42X6T Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
STR91xFAx32 STR91xFAx42 STR91xFAx44
2/99
Contents
1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3
Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1
System-in-a-Package (SiP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2
Package choice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3
ARM966E-S CPU core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4
Burst Flash memory interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.1
Pre-Fetch Queue (PFQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.2
Branch Cache (BC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4.3
Management of literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.5
SRAM (64K or 96K Bytes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5.1
Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5.2
Battery backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.6
DMA data movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7
Non-volatile memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7.1
Primary Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.7.2
Secondary Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.8
One-time-programmable (OTP) memory . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.8.1
Product ID and revision level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.9
Vectored interrupt controller (VIC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.9.1
FIQ handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.9.2
IRQ handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.9.3
Interrupt sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.10
Clock control unit (CCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.10.1
Master clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.10.2
Reference clock (RCLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.10.3
AHB clock (HCLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.10.4
APB clock (PCLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.10.5
Flash memory interface clock (FMICLK) . . . . . . . . . . . . . . . . . . . . . . . . 21
3.10.6
Baud rate clock (BRCLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.10.7
External memory interface bus clock (BCLK) . . . . . . . . . . . . . . . . . . . . 22


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