ST72C334N2B6 STMicroelectronics, ST72C334N2B6 Datasheet - Page 84

• Manufacturer Part Number: ST72C334N2B6
• Description: Microcontrollers (MCU) Flash 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72C334N2B6

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 44
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3.2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: SDIP-56
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: No

ST72334J/N, ST72314J/N, ST72124J
SERIAL COMMUNICATIONS INTERFACE (Cont’d)
Figure 52. SCI Block Diagram
84/125
TDO
RDI
f
CPU
TIE
CR2
TRANSMIT TER
INTERRUPT
TCIE
CONTROL
CLOCK
Transmit Data Register (TDR)
/16
SCI
TRANSMIT
CONTROL
RIE
Transmit Shift Register
Write
ILIE
/2
TE
RE
/PR
RWU
WAKE
UNIT
UP
R8
SBK
T8
CONVEN TIONAL BAUD RATE GENERATOR
SCP1
Received Data Register (RDR)
Read
SCP0SCT2 SCT1 SCT0 SCR2 SCR1SCR0
-
Received Shift Register
TDRE TC RDRF IDLE OR
TRANS MITTER RATE
M
CONTROL
WAKE
RECEIVE R
CONTROL
(DATA REGIST ER) DR
-
RECEIVER RATE
CONTROL
-
CR1
-
NF
BRR
RECEIVER
FE
CLOCK
SR
-