ST10F280 STMicroelectronics, ST10F280 Datasheet - Page 88

• Manufacturer Part Number: ST10F280
• Description: MCU 16BIT 512K FLASH MAC 208-PBG
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F280

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: ASC, CAN, EBI/EMI, SSC
• Peripherals: POR, PWM, WDT
• Number Of I /o: 143
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 18K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 32x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 208-PBGA
• Processor Series: ST10F28x
• Core: ST10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

ST10F280
DP4 (FFCAh / E5h)
For CAN configuration support (see Chapter 15 - CAN Modules), Port 4 has a new open drain function,
controlled with the new ODP4 register:
ODP4 (F1CAh / E5h)
Note: Only bits 6 and 7 are implemented, all other
bits will be read as “0”.
12.6.1 - Alternate Functions of Port 4
During external bus cycles that use segmentation
(i.e. an address space above 64K Bytes) a num-
ber of Port 4 pins may output the segment
address lines. The number of pins used for seg-
ment address output determines the directly
accessible external address space.
The other pins of Port 4 may be used for general
purpose I/O. If segment address lines are
selected, the alternate function of Port 4 may be
necessary to access e.g. external memory directly
88/186
DP4.y
ODP4.y
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
15
15
Port 4 Pin
-
-
Bit
Bit
14
14
-
-
Port 4 Open drain control register bit y
ODP4.y = 0: Port line P4.y output driver in push/pull mode
ODP4.y = 1: Port line P4.y output driver in open drain mode if P4.y is not a segment address line output
GPIO
GPIO
GPIO
GPIO
GPIO/CAN2_RxD
GPIO/CAN1_RxD
GPIO/CAN1_TxD
GPIO/CAN2_TxD
13
13
-
-
SALSEL=01 64 KB
Port direction register DP4 bit y
DP4.y = 0: Port line P4.y is an input (high-impedance)
DP4.y = 1: Port line P4.y is an output
Std. Function
12
12
-
-
11
11
-
-
10
10
-
-
Seg. Address A16
Seg. Address A17
GPIO
GPIO
GPIO/CAN2_RxD
GPIO/CAN1_RxD
GPIO/CAN1_TxD
GPIO/CAN2_TxD
SALSEL=11 256KB
Altern. Function
9
9
-
-
8
8
-
-
SFR
SFR
ODP4.
DP4.7 DP4.6 DP4.5 DP4.4 DP4.3 DP4.2 DP4.1 DP4.0
RW
RW
Function
after reset. For this reason Port 4 will be switched
to this alternate function automatically.
The number of segment address lines is selected
via PORT0 during reset. The selected value can
be read from bitfield SALSEL in register RP0H
(read only) to check the configuration during run
time.
Devices with CAN interfaces use 2 pins of Port 4
to interface each CAN Module to an external CAN
transceiver. In this case the number of possible
segment address lines is reduced.
The table below summarizes the alternate func-
tions of Port 4 depending on the number of
selected segment address lines (coded via bitfield
SALSEL)..
7
7
7
Function
ODP4.
Seg. Address A16
Seg. Address A17
Seg. Address A18
Seg. Address A19
GPIO/CAN2_RxD
GPIO/CAN1_RxD
GPIO/CAN1_TxD
GPIO/CAN2_TxD
RW
RW
6
6
6
SALSEL=00 1MB
Altern. Function
RW
5
5
-
RW
4
4
-
RW
3
3
-
Seg. Address A16
Seg. Address A17
Seg. Address A18
Seg. Address A19
Seg. Address A20
Seg. Address A21
Seg. Address A22
Seg. Address A23
Reset Value: - - 00h
Reset Value: - - 00h
SALSEL=10 16MB
Altern. Function
RW
2
2
-
RW
1
1
-
RW
0
0
-