C8051F340-GQR Silicon Laboratories Inc, C8051F340-GQR Datasheet - Page 212

• Manufacturer Part Number: C8051F340-GQR
• Description: MCU 8-Bit C8051F34x 8051 CISC 64KB Flash 3.3V/5V 48-Pin TQFP T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F340-GQR

• Package: 48TQFP
• Device Core: 8051
• Family Name: C8051F34x
• Maximum Speed: 48 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 40
• Interface Type: I2C/SMBus/SPI/UART/USB
• On-chip Adc: 17-chx10-bit
• Number Of Timers: 4
• Ram Size: 4.25 KB
• Program Memory Size: 64 KB
• Program Memory Type: Flash
• Operating Temperature: -40 to 85 °C

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
212
X = Don’t care
*Note: SCA1-SCA0 and T1M define the Timer Clock Source. Bit definitions for these values can be found in
Table 18.1. Timer Settings for Standard Baud Rates Using the Internal Oscillator
Rate (bps)
Section 21.1
230400
115200
230400
115200
230400
115200
Target
57600
28800
14400
57600
28800
14400
57600
28800
14400
Baud
9600
2400
1200
9600
2400
1200
9600
2400
Rate (bps)
230769
230769
230769
115385
115385
115385
.
Actual
57692
28846
14423
57692
28846
57692
14423
28846
14388
Baud
9615
2404
1202
9615
2404
1202
9615
2404
Rate Error
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.16%
0.08%
0.16%
0.16%
Baud
Oscillator
Divide
Factor
19968
19968
1248
4992
9984
1664
2496
9984
1664
3336
4992
104
208
416
832
104
208
416
832
208
416
832
52
Rev. 1.3
SYSCLK / 12
SYSCLK / 48
SYSCLK / 12
SYSCLK / 48
SYSCLK / 48
SYSCLK / 12
SYSCLK / 12
SYSCLK / 48
Timer Clock
SYSCLK / 4
SYSCLK / 4
SYSCLK / 4
SYSCLK / 4
SYSCLK / 4
SYSCLK / 4
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
SYSCLK
Source
SCA1-SCA0
(pre-scale
select*
XX
XX
XX
XX
XX
XX
XX
XX
XX
01
01
00
10
01
01
00
10
10
01
01
00
00
10
T1M*
1
1
1
1
0
0
0
0
1
1
1
0
0
0
0
0
1
1
0
0
0
0
0
Value (hex)
Timer 1
Reload
0xCC
0xCC
0xE6
0x98
0x30
0x98
0x64
0x30
0x98
0x98
0x30
0x98
0x30
0x98
0x98
0x30
0x98
0x30
0x98
0x30
0x75
0x30
0x30