C8051F312R Silicon Labs, C8051F312R Datasheet - Page 36
C8051F312R
Manufacturer Part Number
C8051F312R
Description
8-bit Microcontrollers - MCU 8KB 10ADC
Manufacturer
Silicon Labs
Datasheet
1.C8051F313R.pdf
(228 pages)
Specifications of C8051F312R
Product Category
8-bit Microcontrollers - MCU
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
8 KB
Data Ram Size
1.25 KB
On-chip Adc
Yes
Operating Supply Voltage
2.7 V to 3.6 V
Package / Case
LQFP-32
Mounting Style
SMD/SMT
A/d Bit Size
10 bit
A/d Channels Available
21
Data Rom Size
128 B
Interface Type
I2C, SMBus, SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
29
Number Of Timers
5
On-chip Dac
No
Processor Series
C8051
Program Memory Type
Flash
Factory Pack Quantity
500
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.7 V
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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
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