ST10F273Z4 STMicroelectronics, ST10F273Z4 Datasheet - Page 18
ST10F273Z4
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
Datasheet
1.ST10F273Z4.pdf
(188 pages)
Specifications of ST10F273Z4
Single Voltage Supply
5 V ±10%
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Pin data
Table 2.
18/188
P4.0 –P4.7
WR/WRL
Symbol
READY/
READY
ALE
RD
Pin description (continued)
85-92
Pin
85
86
87
88
89
90
91
92
95
96
97
98
Type
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
Port 4 is an 8-bit bidirectional I/O port. It is bit-wise programmable for input or
output via direction bit. Programming an I/O pin as input forces the
corresponding output driver to high impedance state. The input threshold is
selectable (TTL or CMOS). Port 4.4, 4.5, 4.6 and 4.7 outputs can be configured
as push-pull or open drain drivers.
In case of an external bus configuration, Port 4 can be used to output the
segment address lines:
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
External memory read strobe. RD is activated for every external instruction or
data read access.
External memory write strobe. In WR-mode this pin is activated for every
external data write access. In WRL mode this pin is activated for low byte data
write accesses on a 16-bit bus, and for every data write access on an 8-bit bus.
See WRCFG in the SYSCON register for mode selection.
Ready input. The active level is programmable. When the ready function is
enabled, the selected inactive level at this pin, during an external memory
access, will force the insertion of waitstate cycles until the pin returns to the
selected active level.
Address latch enable output. In case of use of external addressing or of
multiplexed mode, this signal is the latch command of the address lines.
A16
A17
A18
A19
A20
CAN2_RxD
SCL
A21
CAN1_RxD
CAN2_RxD
A22
CAN1_TxD
CAN2_TxD
A23
CAN2_TxD
SDA
Segment address line
Segment address line
Segment address line
Segment address line
Segment address line
CAN2: receive data input
I
Segment address line
CAN1: receive data input
CAN2: receive data input
Segment address line
CAN1: transmit data output
CAN2: transmit data output
Most significant segment address line
CAN2: transmit data output
I
2
2
C Interface: serial clock
C Interface: serial data
Function
ST10F273Z4
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