ST72T311 ST Microelectronics, ST72T311 Datasheet - Page 4

• Manufacturer Part Number: ST72T311
• Description: 8-BIT MCU WITH 8 TO 16K OTP/EPROM
• Manufacturer: ST Microelectronics

ST72E311 ST72T311
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST72T311 HCMOS Microcontroller Unit
(MCU) is a member of the ST7 family. The device
is based on an industry-standard 8-bit core and
features an enhanced instruction set. The device
is normally operated at a 16 MHz oscillator fre-
quency. Under software control, the ST72T311
may be placed in either Wait, Slow or Halt modes,
thus reducing power consumption. The enhanced
instruction set and addressing modes afford real
programming potential. In addition to standard
8-bit data management, the ST72T311 features
true bit manipulation, 8x8 unsigned multiplication
and indirect addressing modes on the whole mem-
ory. The device includes a low consumption and
Figure 1. ST72T311 Block Diagram
4/100
PF0 -> PF2,4,6,7
4
OSCOUT
(6 bits)
RESET
OSCIN
V
V
DD
SS
(384 - 512 Bytes)
(8 - 16K Bytes)
8-BIT CORE
CONTROL
PROGRAM
AND LVD
MEMORY
TIMER A
POWER
SUPPLY
PORT F
RAM
ALU
OSC
Internal
CLOCK
fast start on-chip oscillator, CPU, program memo-
ry
(ST72T311N) or 32 (ST72T311J) I/O lines, a Low
Voltage Detector (LVD) and the following on-chip
peripherals: Analog-to-Digital converter (ADC)
with 8 (ST72T311N) or 6 (ST72T311J) multiplexed
analog inputs, industry standard synchronous SPI
and asynchronous SCI serial interfaces, digital
Watchdog, two independent 16-bit Timers, one
featuring an External Clock Input, and both featur-
ing Pulse Generator capabilities, 2 Input Captures
and 2 Output Compares (only 1 Input Capture and
1 Output Compare on Timer A).
WATCH DOG
(OTP/EPROM
8-BIT ADC
TIMER B
PORT C
PORT D
PORT E
PORT A
PORT B
SPI
SCI
versions),
(2 bits for ST72T311J)
(8 bits for ST72T311N)
(6 bits for ST72T311N)
(5 bits for ST72T311J)
(8 bits for ST72T311N)
(8 bits for ST72T311N)
(5 bits for ST72T311J)
(6 bits for ST72T311J)
PC0 -> PC7
PE0 -> PE7
PD0 -> PD7
V
V
PA0 -> PA7
PB0 -> PB7
(8 bits)
DDA
SSA
RAM,
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