ST10R272L STMicroelectronics, ST10R272L Datasheet - Page 6

• Manufacturer Part Number: ST10R272L
• Description: 16-BIT Romless MCU WITH MAC UNIT
• Manufacturer: STMicroelectronics

Specifications of ST10R272L

• Cpu Frequency: 0 to 50 MHz
• Power: 3.3 Volt +/-0.3V

ST10R272L - PIN DESCRIPTION
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1
P3.0 –
P3.13
P3.15
8-21
22
9
10
11
12
13
14
15
18
19
20
22
I/O
I/O
O
I
O
I
I
I
I
O
I/O
O
O
O
5T
5T
5T
5T
5T
5T
5T
5T
5T
5T
5T
5T
5T
5T
Table 1 Pin definitions
A 15-bit (P3.14 is missing) bidirectional I/O port. Port 3 is bit-
wise programmable for input or output via direction bits. For a
pin configured as input, the output driver is put into high-
impedance state. Port 3 outputs can be configured as push/
pull or open drain drivers. The following pins have alternate
functions:
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
P3.10
P3.11
P3.12
P3.15
T6OUT
CAPIN
T3OUT
T3EUD
T4IN
T3IN
T2IN
TxD0
RxD0
BHE
WRH
CLKOUT
GPT2 Timer T6 toggle latch output
input
GPT1 Timer T3 toggle latch output
GPT1 Timer T3 ext.up/down ctrl.input
GPT1 Timer T4 input for count/gate/
reload/capture
GPT1 Timer T3 count/gate input
GPT1 Timer T2 input for count/gate/
reload/capture
ASC0 clock/data output (asyn./syn.)
ASC0 data input (asyn.) or I/O (syn.)
Ext. Memory High Byte Enable Signal
Ext. Memory High Byte Write Strobe
GPT2 Register CAPREL capture
System clock output (=CPU clock)