STM32L151CBU6 STMicroelectronics, STM32L151CBU6 Datasheet - Page 94

• Manufacturer Part Number: STM32L151CBU6
• Description: IC MCU 32BIT 128KB FLASH 48QFPN
• Manufacturer: STMicroelectronics
• Series: STM32r

Specifications of STM32L151CBU6

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 16x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-UFQFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11484

Electrical characteristics
6.3.19
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LCD controller (STM32L152xx only)
The STM32L152xx embeds a built-in step-up converter to provide a constant LCD reference
voltage independently from the V
to the V
Table 56.
1. LCD enabled with 3 V internal step-up active, 1/8 duty, 1/4 bias, division ratio= 64, all pixels active, no LCD
Symbol
I
connected
V
V
V
V
V
V
V
V
LCD
V
C
V
V
V
V
V
V
LCD0
LCD1
LCD2
LCD3
LCD4
LCD5
LCD6
LCD7
R
R
V
LCD
ext
44
34
23
12
13
14
H
L
0
(1)
LCD
pin to decouple this converter.
LCD controller characteristics
LCD external voltage
LCD internal reference voltage 0
LCD internal reference voltage 1
LCD internal reference voltage 2
LCD internal reference voltage 3
LCD internal reference voltage 4
LCD internal reference voltage 5
LCD internal reference voltage 6
LCD internal reference voltage 7
V
Supply current at V
Supply current at V
Low drive resistive network
High drive resistive network
Segment/Common highest level voltage
Segment/Common 3/4 level voltage
Segment/Common 2/3 level voltage
Segment/Common 1/2 level voltage
Segment/Common 1/3 level voltage
Segment/Common 1/4 level voltage
Segment/Common lowest level voltage
LCD
external capacitance
Parameter
DD
DD
Doc ID 17659 Rev 4
DD
= 2.2 V
= 3.0 V
voltage. An external capacitor C
0
Min
0.1
STM32L151xx, STM32L152xx
3/4 V
2/3 V
1/2 V
1/3 V
1/4 V
1.65
Typ
2.6
2.7
2.8
2.9
3.1
3.2
3.3
3.3
3.1
60
3
ext
LCD
LCD
LCD
LCD
LCD
must be connected
V
Max
3.6
LCD
2
Unit
M
k
µF
µA
V
V
V
V
V