C8051F537-IT Silicon Laboratories Inc, C8051F537-IT Datasheet - Page 212

• Manufacturer Part Number: C8051F537-IT
• Description: IC 8051 MCU 2K FLASH 20TSSOP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F53xr

Specifications of C8051F537-IT

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.25 V
• Data Converters: A/D 16x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 336-1401

C8051F52x/F52xA/F53x/F53xA
21. C2 Interface
C8051F52x/F52xA/F53x/F53xA devices include an on-chip Silicon Laboratories 2-Wire (C2) debug inter-
face to allow Flash programming and in-system debugging with the production part installed in the end
application. The C2 interface uses a clock signal (C2CK) and a bi-directional C2 data signal (C2D) to trans-
fer information between the device and a host system. See the C2 Interface Specification for details on the
C2 protocol.
21.1. C2 Interface Registers
The following describes the C2 registers necessary to perform Flash programming functions through the
C2 interface. All C2 registers are accessed through the C2 interface as described in the C2 Interface Spec-
ification.
C2 Register Definition 21.1. C2ADD: C2 Address
C2 Register Definition 21.2. DEVICEID: C2 Device ID
212
Bits7–0: The C2ADD register is accessed via the C2 interface to select the target Data register for
This read-only register returns the 8-bit device ID: 0x11 (C8051F52x/F52xA/F53x/F53xA).
Address
0x00
0x01
0x02
0xB4
Bit7
Bit7
C2 Data Read and Data Write commands.
Description
Selects the Device ID register for Data Read instructions (DEVICEID)
Selects the Revision ID register for Data Read instructions (REVID)
Selects the C2 Flash Programming Control register for Data Read/Write instructions
(FPCTL)
Selects the C2 Flash Programming Data register for Data Read/Write instructions
(FPDAT)
Bit6
Bit6
Bit5
Bit5
Bit4
Bit4
Rev. 1.3
Bit3
Bit3
Bit2
Bit2
Bit1
Bit1
Bit0
Bit0
00000000
00010001
Reset Value
Reset Value