ST72521 STMICROELECTRONICS [STMicroelectronics], ST72521 Datasheet - Page 17

• Manufacturer Part Number: ST72521
• Description: 8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Legend: x=undefined, R/W=read/write
Notes:
1. The contents of the I/O port DR registers are readable only in output configuration. In input configura-
tion, the values of the I/O pins are returned instead of the DR register contents.
2. The bits associated with unavailable pins must always keep their reset value.
Address
005Ah
005Bh
005Ch
005Dh
005Eh
007Ah
007Bh
007Ch
007Dh
007Eh
0050h
0051h
0052h
0053h
0054h
0055h
0056h
0057h
0058h
0059h
005Fh
0060h
006Fh
0070h
0071h
0072h
0073h
0074h
0075h
0076h
0077h
0078h
0079h
007Fh
to
PWM ART
Block
CAN
ADC
SCI
SCISR
SCIDR
SCIBRR
SCICR1
SCICR2
SCIERPR
SCIETPR
CANISR
CANICR
CANCSR
CANBRPR
CANBTR
CANPSR
ADCCSR
ADCDRH
ADCDRL
PWMDCR3
PWMDCR2
PWMDCR1
PWMDCR0
PWMCR
ARTCSR
ARTCAR
ARTARR
ARTICCSR
ARTICR1
ARTICR2
Register
Label
SCI Status Register
SCI Data Register
SCI Baud Rate Register
SCI Control Register 1
SCI Control Register 2
SCI Extended Receive Prescaler Register
Reserved area
SCI Extended Transmit Prescaler Register
CAN Interrupt Status Register
CAN Interrupt Control Register
CAN Control / Status Register
CAN Baud Rate Prescaler Register
CAN Bit Timing Register
CAN Page Selection Register
First address
to
Last address of CAN page x
Control/Status Register
Data High Register
Data Low Register
PWM AR Timer Duty Cycle Register 3
PWM AR Timer Duty Cycle Register 2
PWM AR Timer Duty Cycle Register 1
PWM AR Timer Duty Cycle Register 0
PWM AR Timer Control Register
Auto-Reload Timer Control/Status Register
Auto-Reload Timer Counter Access Register
Auto-Reload Timer Auto-Reload Register
AR Timer Input Capture Control/Status Reg.
AR Timer Input Capture Register 1
AR Timer Input Capture Register 1
Reserved Area (2 Bytes)
Reserved Area (2 Bytes)
Register Name
x000 0000b
Status
Reset
C0h
00h
00h
00h
00h
00h
00h
00h
00h
23h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
xxh
---
--
Read Only
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
See CAN
Description
R/W
Read Only
Read Only
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read Only
Read Only
ST72521
Remarks
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