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ST10F276 Datasheet(PDF) 48 Page - STMicroelectronics

Part # ST10F276
Description  16-bit MCU with MAC unit, 832 Kbyte Flash memory and 68 Kbyte RAM
PDF  229 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10F276 Datasheet(HTML) 48 Page - STMicroelectronics

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Bootstrap loader
ST10F276
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5.2.2
ST10 configuration in BSL
When the ST10F276 has entered BSL mode, the configuration shown in Table 29 is
automatically set (values that deviate from the normal reset values are marked in bold).
Table 29.
ST10 configuration in BSL mode
Function or register
Access
Notes
Watchdog Timer
Disabled
Register SYSCON
0404H
(1)
1.
In Bootstrap modes (standard or alternate) ROMEN, bit 10 of SYSCON, is always set regardless of EA pin
level. BYTDIS, bit 9 of SYSCON, is set according to data bus width selection via Port0 configuration.
XPEN bit set for Bootstrap via CAN or
Alternate Boot Mode
Context Pointer CP
FA00H
Register STKUN
FC00H
Stack Pointer SP
FA40H
Register STKOV
FA00H
Register BUSCON0
acc. to startup config.(2)
2.
BUSCON0 is initialized with 0000h, external bus disabled, if pin EA is high during reset. If pin EA is low
during reset, BUSACT0, bit 10, and ALECTL0, bit 9, are set enabling the external bus with lengthened ALE
signal. BTYP field, bit 7 and 6, is set according to Port0 configuration.
Register S0CON
8011H
Initialized only if Bootstrap via UART
Register S0BG
acc. to ‘00’ byte
Initialized only if Bootstrap via UART
P3.10 / TXD0
‘1’
Initialized only if Bootstrap via UART
DP3.10
‘1’
Initialized only if Bootstrap via UART
CAN1 Status/Control
Register
0000H
Initialized only if Bootstrap via CAN
CAN1 Bit Timing Register
acc. to ‘0’ frame
Initialized only if Bootstrap via CAN
XPERCON
042DH
XRAM1-2, XFlash, CAN1 and XMISC
enabled. Initialized only if Bootstrap via CAN
P4.6 / CAN1_TxD
‘1’
Initialized only if Bootstrap via CAN
DP4.6
‘1’
Initialized only if Bootstrap via CAN



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