C8051F312-GQR Silicon Laboratories Inc, C8051F312-GQR Datasheet - Page 36

• Manufacturer Part Number: C8051F312-GQR
• Description: IC 8051 MCU 8K FLASH 32LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F31xr

Specifications of C8051F312-GQR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 29
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 21x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: 336-1445 - ADAPTER PROGRAM TOOLSTICK F310
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

C8051F310/1/2/3/4/5/6/7
3.
36
–40°C to +85°C, 25 MHz System Clock unless otherwise specified.
Digital Supply Voltage
Digital Supply RAM Data Retention
Voltage
Specified Operating Temperature
Range
SYSCLK (system clock frequency)
Tsysl (SYSCLK low time)
Tsysh (SYSCLK high time)
Digital Supply Current—CPU Active (Normal Mode, fetching instructions from Flash)
I
I
Note 4)
I
Note 5)
Notes:
1. Given in Table 9.1 on page 110.
2. SYSCLK must be at least 32 kHz to enable debugging.
3. Based on device characterization data, not production tested.
4. Active and Inactive I
5. I
6. Idle I
DD
DD
DD
(Note 3)
Supply Sensitivity (Note 3,
Frequency Sensitivity (Note 3,
using the I
7.8 mA typical at 3.0 V and f = 25 MHz. From this, I
3.3 V and f = 25 MHz.
quency sensitivity number for that range. When using these numbers to estimate I
the estimate should be the current at 25 MHz minus the difference in current indicated by the fre-
quency sensitivity number. For example: 
V
frequency sensitivity number for that range. When using these numbers to estimate Idle I
MHz, the estimate should be the current at 25 MHz minus the difference in current indicated by the
frequency sensitivity number. For example: 
V
DD
DD
DD
Global DC Electrical Characteristics
can be estimated for frequencies < 15 MHz by multiplying the frequency of interest by the fre-
= 3.0 V; F = 20 MHz, I
= 3.0 V; F = 5 MHz, Idle I
DD
Parameter
can be estimated for frequencies < 1 MHz by multiplying the frequency of interest by the
DD
Supply Sensitivity. For example, if the V
Table 3.1. Global DC Electrical Characteristics
DD
at voltages and frequencies other than those specified can be calculated
DD
DD
= 7.8 mA – (25 MHz – 20 MHz) x 0.21 mA/MHz = 6.75 mA.
V
V
V
V
= 4.8 mA – (25 MHz – 5 MHz) x 0.15 mA/MHz = 1.8 mA.
DD
DD
DD
DD
= 3.0 V, F < 15 MHz, T = 25 ºC
= 3.0 V, F > 15 MHz, T = 25 ºC
= 3.6 V, F < 15 MHz, T = 25 ºC
= 3.6 V, F > 15 MHz, T = 25 ºC
V
V
V
V
DD
DD
DD
DD
= 3.0 V, F = 25 MHz
= 3.6 V, F = 25 MHz
= 3.0 V, F = 80 kHz
= 3.0 V, F = 1 MHz
Conditions
F = 25 MHz
F = 1 MHz
Rev. 1.7
DD
DD
= 7.8 mA + 0.67 x (3.3 V – 3.0 V) = 8 mA at
is 3.3 V instead of 3.0 V at 25 MHz: I
V
Min
–40
RST
18
—
0
18
—
—
—
—
—
—
—
—
—
—
2
1
0.38
10.7
0.39
0.21
0.55
0.27
Typ
3.0
1.5
7.8
31
67
62
—
—
—
—
DD
for > 15 MHz,
Max
12.1
+85
3.6
8.6
25
—
—
—
—
—
—
—
—
—
—
—
DD
for > 1
mA/MHz
mA/MHz
mA/MHz
mA/MHz
DD
Units
MHz
%/V
%/V
mA
mA
mA
µA
°C
ns
ns
=
V
V