ST72C334N2B6 STMicroelectronics, ST72C334N2B6 Datasheet - Page 6

• 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
2 GENERAL DESCRIPTION
2.1 INTRODUCTION
The ST72334J/N, ST72314J/N and ST72124J de-
vices are members of the ST7 microcontroller fam-
ily. They can be grouped as follows:
– ST72334J/N devices are designed for mid-range
– ST72314J/N devices target the same range of
– ST72124J devices are for applications that do
All devices are based on a common industry-
standard 8-bit core, featuring an enhanced instruc-
tion set.
Figure 1. Device Block Diagram
6/125
(8 bits for N versions)
applications with Data EEPROM, ADC, SPI and
SCI interface capabilities.
applications but without Data EEPROM.
not need Data EEPROM and the ADC peripher-
al.
(6 bits for J versions)
V
PP
RESET
OSC1
OSC2
/TES T
V
V
PD7:0
V
V
DDA
SSA
DD
SS
(8 or 16K Bytes)
Data-EEPROM
CLOCK FILTER
8-BIT CORE
PROGRAM
(256 Bytes)
MULTI OSC
CONTROL
8-BIT ADC
MEMORY
AND LVD
POWER
SUPPLY
PORT D
ALU
+
Internal
CLOCK
The
ST72C124J
FLASH memory with byte-by-byte In-Situ Pro-
gramming (ISP) capability.
Under software control, all devices can be placed
in WAIT, SLOW, ACTIVE-HALT or HALT mode,
reducing power consumption when the application
is in idle or standby state.
The enhanced instruction set and addressing
modes of the ST7 offer both power and flexibility to
software developers, enabling the design of highly
efficient and compact application code. In addition
to standard 8-bit data management, all ST7 micro-
controllers feature true bit manipulation, 8x8 un-
signed multiplication and indirect addressing
modes.
(384 or 512 Bytes)
ST72C334J/N,
WATCH DOG
PORT B
TIMER B
TIMER A
PORT E
PORT A
PORT C
PORT F
RAM
SCI
SPI
versions
feature
ST72C314J/N
PA7:0
(8 bits for N versions)
(5 bits for J versions)
PB7:0
(8 bits for N versions)
(5 bits for J versions)
PC7:0
(8 bits)
PF7,6,4,2:0
(6 bits)
PE7:0
(6 bits for N versions)
(2 bits for J versions)
single-voltage
and
5