STR911FM44X6 STMicroelectronics, STR911FM44X6 Datasheet - Page 31
STR911FM44X6
Manufacturer Part Number
STR911FM44X6
Description
MCU 512K FLASH 96K SRAM USB CAN
Manufacturer
STMicroelectronics
Series
STR9r
Datasheet
1.STR910FM32X6.pdf
(73 pages)
Specifications of STR911FM44X6
Core Processor
ARM9
Core Size
32-Bit
Speed
96MHz
Connectivity
CAN, I²C, Microwire, SPI, SSP, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, Motor Control PWM, POR, PWM, WDT
Number Of I /o
40
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
96K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 2 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-LQFP
For Use With
MCBSTR9UME - BOARD EVAL MCBSTR9 + ULINK-MEMCBSTR9U - BOARD EVAL MCBSTR9 + ULINK2MCBSTR9 - BOARD EVAL STM STR9 SERIES
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
497-5061
497-5061-2
497-5061-2
STR911FM44X6T
497-5061-2
497-5061-2
STR911FM44X6T
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
STR91xF
●
●
Figure 4.
To use all 24 address bits, the following applies: 8 bits of lowest-order data and 8 bits of
lowest-order address are multiplexed on port 8. On port 9, 8-bits of mid-order address are
multiplexed with 8 bits of data, but these 8 data values are always at logic zero on this port
during a write operation, and these 8 data bits are ignored during a read operation. An
external latch device (such as a ‘373 latch) is needed to de-multiplex the mid-order 8
address bits that are generated on port 8. Port 7 outputs the 8 highest-order address
signals directly (not multiplexed). The output signal on pin EMI_ALE is used to demultiplex
the signals on ports 8 and 9, and the polarity of EMI_ALE is programmable. The output
signal on pin EMI_BWR_WRLn is the data write strobe, and the output on pin EMI_RDn is
the data read strobe.
respectively. The output signal EMI_RDn is the read strobe for both the low and high data
bytes.
8-bit multiplexed data mode: This is a variant of the 16-bit multiplexed mode. Although
this mode can provide 24 bits of address and 8 bits of data, it does require an external
latch device on Port 8. However, this mode is most efficient when connecting devices that
only require 8 bits of address on an 8-bit multiplexed address/data bus, and have simple
read, write, and latch inputs as shown in
8-bit non-multiplexed data mode
of address are output on ports 7 and 9. The output signal on pin EMI_BWR_BWLn is the
data write strobe and the output on pin EMI_RDn is the data read strobe.
EMI 16-bit multiplexed connection example
STR91xx
EMI_BWR_WRLn
EMI_WRHn
EMI_AD15
EMI_AD14
EMI_AD13
EMI_AD12
EMI_AD11
EMI_AD10
EMI_CS3n
EMI_CS2n
EMI_CS1n
EMI_CS0n
EMI_AD9
EMI_AD8
EMI_AD7
EMI_AD6
EMI_AD5
EMI_AD4
EMI_AD3
EMI_AD2
EMI_AD1
EMI_AD0
EMI_RDn
EMI_ALE
EMI_A22
EMI_A21
EMI_A20
EMI_A19
EMI_A18
EMI_A17
EMI_A16
EMI_A23
P7.7
P7.6
P7.5
P7.4
P7.3
P7.2
P7.1
P7.0
P9.7
P9.6
P9.5
P9.4
P9.3
P9.2
P9.1
P9.0
P8.7
P8.6
P8.5
P8.4
P8.3
P8.2
P8.1
P8.0
(Figure
Figure 5
6): Eight bits of data are on port 8, while 16 bits
CHIP_SELECT
WRITE_HIGH_BYTE
WRITE_LOW_BYTE
READ
ADDR_LATCH
A23
A22
A21
A20
A19
A18
A17
A16
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
DEVICE
16-BIT
Functional overview
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