C8051F042-GQR Silicon Laboratories Inc, C8051F042-GQR Datasheet - Page 284

• Manufacturer Part Number: C8051F042-GQR
• Description: IC 8051 MCU 64K FLASH 100TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F04xr

Specifications of C8051F042-GQR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: CAN, EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 64
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x8b, 13x10b; D/A 2x10b, 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• For Use With: 336-1205 - DEV KIT FOR F040/F041/F042/F043
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

C8051F040/1/2/3/4/5/6/7
284
Table 22.1. Timer Settings for Standard Baud Rates Using the Internal 24.5 MHz
Table 22.2. Timer Settings for Standard Baud Rates Using an External 25.0 MHz
Baud Rate
Baud Rate
230400
115200
Target
230400
115200
57600
28800
14400
57600
28800
14400
Target
57600
28800
14400
(bps)
9600
2400
1200
9600
(bps)
9600
2400
1200
X = Don’t care
*Note: SCA1-SCA0 and T1M bit definitions can be found in
X = Don’t care
*Note: SCA1-SCA0 and T1M bit definitions can be found in
Baud Rate
Baud Rate
% Error
% Error
-0.47%
-0.01%
-0.01%
-0.01%
-0.47%
-0.47%
0.45%
0.45%
0.15%
0.45%
0.45%
0.15%
-0.32%
-0.32%
-0.32%
-0.32%
-0.32%
0.15%
0.15%
0.15%
Oscillator
Oscillator
Divide
Factor
10464
20832
Factor
Divide
10176
20448
1736
2608
1744
2608
1704
2544
108
218
434
872
432
864
106
212
426
848
Frequency: 24.5 MHz
Frequency: 25.0 MHz
Oscillator
Oscillator
Rev. 1.5
SYSCLK / 48
SYSCLK / 48
Timer Clock
SYSCLK / 4
SYSCLK / 4
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
SYSCLK / 12
SYSCLK / 12
SYSCLK / 48
SYSCLK / 48
Timer Clock
SYSCLK / 4
SYSCLK
SYSCLK
SYSCLK
Source
SYSCLK
SYSCLK
SYSCLK
Source
SCA1-SCA0
SCA1-SCA0
(pre-scale
(pre-scale
select)
select)
XX
XX
XX
01
01
11
10
10
11
11
11
11
XX
XX
XX
01
00
00
10
10
Section 23.1
*
Section 23.1
*
T1M
T1M
1
1
1
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
*
*
.
.
Value (hex)
Timer 1
Reload
Timer 1
Reload
Value
0xCB
(hex)
0x2B
0xB9
0x2B
0x96
0x96
0x96
0x96
0xCA
0x5D
0xCA
0x5D
0xE5
0x93
0x27
0x93
0x27
0x93
0x27
0x93