Specifications

C8051F330/1
154 Rev. 1.1
Tabl e 16.5. Timer Settings for Standard Baud Rates Using an External Oscillator
Frequency: 11.0592 MHz
Target
Baud Rate
(bps)
Baud Rate
% Error
Oscillator
Divide
Factor
Timer Clock
Source
SCA1-SCA0
(pre-scale select)
†
T1M
†
Timer 1
Reload
Value (hex )
SYSCLK from
External Osc.
230400 0.00% 48 SYSCLK XX 1 0xE8
115200 0.00% 96 SYSCLK XX 1 0xD0
57600 0.00% 192 SYSCLK XX 1 0xA0
28800 0.00% 384 SYSCLK XX 1 0x40
14400 0.00% 768 SYSCLK / 12 00 0 0xE0
9600 0.00% 1152 SYSCLK / 12 00 0 0xD0
2400 0.00% 4608 SYSCLK / 12 00 0 0x40
1200 0.00% 9216 SYSCLK / 48 10 0 0xA0
SYSCLK from
Internal Osc.
230400 0.00% 48 EXTCLK / 8 11 0 0xFD
115200 0.00% 96 EXTCLK / 8 11 0 0xFA
57600 0.00% 192 EXTCLK / 8 11 0 0xF4
28800 0.00% 384 EXTCLK / 8 11 0 0xE8
14400 0.00% 768 EXTCLK / 8 11 0 0xD0
9600 0.00% 1152 EXTCLK / 8 11 0 0xB8
X = Don’t care
†
SCA1-SCA0 and T1M bit definitions can be found in Section 18.1.
Tabl e 16.6. Timer Settings for Standard Baud Rates Using an External Oscillator
Frequency: 3.6864 MHz
Target
Baud Rate
(bps)
Baud Rate%
Error
Oscillator
Divide
Factor
Timer Clock
Source
SCA1-SCA0
(pre-scale select)
†
T1M
†
Timer 1
Reload
Value (hex )
SYSCLK from
External Osc.
230400 0.00% 16 SYSCLK XX 1 0xF8
115200 0.00% 32 SYSCLK XX 1 0xF0
57600 0.00% 64 SYSCLK XX 1 0xE0
28800 0.00% 128 SYSCLK XX 1 0xC0
14400 0.00% 256 SYSCLK XX 1 0x80
9600 0.00% 384 SYSCLK XX 1 0x40
2400 0.00% 1536 SYSCLK / 12 00 0 0xC0
1200 0.00% 3072 SYSCLK / 12 00 0 0x80
SYSCLK from
Internal Osc.
230400 0.00% 16 EXTCLK / 8 11 0 0xFF
115200 0.00% 32 EXTCLK / 8 11 0 0xFE
57600 0.00% 64 EXTCLK / 8 11 0 0xFC
28800 0.00% 128 EXTCLK / 8 11 0 0xF8
14400 0.00% 256 EXTCLK / 8 11 0 0xF0
9600 0.00% 384 EXTCLK / 8 11 0 0xE8
X = Don’t care
†
SCA1-SCA0 and T1M bit definitions can be found in Section 18.1.