C8051F236-GQR Silicon Laboratories Inc, C8051F236-GQR Datasheet - Page 15

• Manufacturer Part Number: C8051F236-GQR
• Description: IC 8051 MCU 8K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F2xxr

Specifications of C8051F236-GQR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 32
• 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
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TQFP, 48-VQFP
• Processor Series: C8051F2x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3 bit
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F226DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 32 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

1.1.
1.1.1. Fully 8051 Compatible
The C8051F206, C8051F220/1/6 and C8051F230/1/6 utilize Silcon Labs’ proprietary CIP-51 microcon-
troller core. The CIP-51 is fully compatible with the MCS-51
assemblers and compilers can be used to develop software. The core contains the peripherals included
with a standard 8052, including three 16-bit counter/timers, a full-duplex UART, 256 bytes of internal RAM,
an optional 1024 bytes of XRAM, 128 byte Special Function Register (SFR) address space, and four byte-
wide I/O Ports.
1.1.2. Improved Throughput
The CIP-51 employs a pipelined architecture that greatly increases its instruction throughput over the stan-
dard 8051 architecture. In a standard 8051, all instructions except for MUL and DIV take 12 or 24 system
clock cycles to execute with a maximum system clock of 12 MHz. By contrast, the CIP-51 core executes
70% of its instructions in one or two system clock cycles, with only four instructions taking more than four
system clock cycles.
The CIP-51 has a total of 109 instructions. The number of instructions versus the system clock cycles to
execute them is as follows:
Clocks to Execute
XTAL1
XTAL2
/RST
VDD
GND
TCK
TMS
TDI
TDO
Instructions
NC
CIP-51
Digital Power
TM
Oscillator
Oscillator
Monitor,
External
Internal
Circuit
JTAG
Logic
WDT
VDD
Microcontroller Core
Figure 1.4. C8051F231 Block Diagram (32 LQFP)
Emulation HW
26
1
System Clock
Reset
C
50
o
8
0
5
1
e
r
2
SFR Bus
256 byte
Clock & Reset
FLASH
Configuration
8kbyte
SRAM
2/3
5
Rev. 1.6
14
3
TM
3/4
CP0
CP1
7
Comparator
Port Mux
Port I/O Mode
Timer 0
Timer 1
Timer 2
Control
Port 0
UART
Port 1
Port 2
Port 3
Latch
Latch
Latch
Latch
Config.
& Config.
SPI
instruction set. Standard 803x/805x
CP0
CP1
CP0+
CP0-
CP1+
CP1-
3
4
M
M
M
P
U
X
P
U
X
P
U
X
0
1
2
C8051F2xx
4/5
1
P
D
P
D
P
D
0
v
1
v
2
v
r
r
r
2
5
P0.0/TX
P0.1/RX
P0.2//INT0
P0.3//INT1
P0.4/T0
P0.5/T1
P0.6/T2
P0.7/T2EX
P1.0/CP0+
P1.1/CP0-
P1.2/CP0
P1.3/CP1+
P1.4/CP1-
P1.5/CP1
P1.6/SYSCLK
P1.7
P2.0/SCK
P2.1/MISO
P2.2/MOSI
P2.3/NSS
P2.4
P2.5
1
8
15