ST72124J2 STMicroelectronics, ST72124J2 Datasheet - Page 137

• Manufacturer Part Number: ST72124J2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY,ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
• Manufacturer: STMicroelectronics

Specifications of ST72124J2

• Clock Sources: crystal/ceramic resonator oscillators or RC oscillators, external clock, backup Clock Security System
• 4 Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Two 16-bit Timers With: 2 input captures (only one on timer A), 2 output compares (only one on timer A), External clock input on timer A, PWM and Pulse generator modes

COMMUNICATIONS INTERFACE CHARACTERISTICS (Cont’d)
16.11.2 SCI - Serial Communications Interface
Subject to general operating condition for V
SC
Refer to I/O port characteristics for more details on
the input/output alternate function characteristics
(RDI and TDO).
Symbol
f
f
Tx
Rx
, and T
A
Communication frequency 8MHz
unless otherwise specified.
Parameter
f
CPU
vs. Standard
~0.16%
~0.79%
Accuracy
DD
, f
O-
Conditions
Conventional Mode
TR (or RR)=64, PR=13
TR (or RR)=16, PR=13
TR (or RR)= 8, PR=13
TR (or RR)= 4, PR=13
TR (or RR)= 2, PR=13
TR (or RR)= 8, PR= 3
TR (or RR)= 1, PR=13
Extended Mode
ETPR (or ERPR) = 13
Extended Mode
ETPR (or ERPR) = 35
ST72334J/N, ST72314J/N, ST72124J
Prescaler
Standard
10400
19200
38400 ~38461.54
14400 ~14285.71
1200
2400
4800
9600
300
~10416.67
~19230.77
~1201.92
~2403.84
~4807.69
~9615.38
Baud
~300.48
Rate
137/153
Unit
Hz