ST10F272B_12 STMICROELECTRONICS [STMicroelectronics], ST10F272B_12 Datasheet - Page 18

• Manufacturer Part Number: ST10F272B_12
• Description: 16-bit MCU with 256 Kbyte Flash memory and 12/20 Kbyte RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Pin data
Table 1.
18/188
P3.6 - P3.13,
P3.0 - P3.5
Symbol
P3.15
Pin description (continued)
65-70,
73-80,
Pin
81
65
66
67
68
69
70
73
74
75
76
77
78
79
80
81
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
I
I
I
I
I
I
15-bit (P3.14 is missing) bidirectional I/O port, 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. Port 3 outputs can be configured as push-
pull or open drain drivers. The input threshold of Port 3 is selectable (TTL or
CMOS). The following Port 3 pins have alternate functions:
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
P3.8
P3.9
P3.10
P3.11
P3.12
P3.13
P3.15
CAPIN
BHE
T0IN
T6OUT
T3OUT
T3EUD
T4IN
T3IN
T2IN
MRST0
MTSR0
TxD0
RxD0
WRH
SCLK0
CLKOUT
Doc ID 11917 Rev 3
CAPCOM1: timer T0 count input
GPT2: timer T6 toggle latch output
GPT2: register CAPREL capture input
GPT1: timer T3 toggle latch output
GPT1: timer T3 external up/down control 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
SSC0: master-receiver/slave-transmitter I/O
SSC0: master-transmitter/slave-receiver O/I
ASC0: clock / data output (asynchronous/synchronous)
ASC0: data input (asynchronous) or I/O (synchronous)
External memory high byte enable signal
External memory high byte write strobe
System clock output (programmable divider on CPU
clock)
SSC0: master clock output / slave clock input
Function
ST10F272B/ST10F272E