C8051F411EK Silicon Laboratories Inc, C8051F411EK Datasheet - Page 189
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C8051F411EK
Manufacturer Part Number
C8051F411EK
Description
KIT EVAL FOR C8051F411
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F411EK
Contents
Evaluation Board, CD-ROM, USB Cable, Batteries and User Guide
Processor To Be Evaluated
C8051F41x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F411
Silicon Family Name
C8051F41x
Kit Contents
LCD Based Evaluation Board, USB Cable, Software CD And Quick-Start Guide
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051F41x
For Use With
336-1315 - KIT REF DESIGN VOICE RECORD F41X
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1317
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L0: mov A, RTC0ADR
L1: mov A, RTC0ADR
L2: mov A, RTC0ADR
L3: mov A, RTC0ADR
L4: mov A, RTC0ADR
To reduce the number of instructions necessary to read and write sections of the 64-byte RAM, the RAMA-
DDR register automatically increments after each write or read. The following C example initializes the
entire 64-byte RAM to 0xA5 and copies this value from the RAM to an array using the auto-increment fea-
ture:
// in 'C':
unsigned char RAM_data[64] = 0x00;
unsigned char addr;
// Unlock smaRTClock, enable smaRTClock
// Write to the entire smaRTClock RAM
RTC0ADR = 0x0E;// address the RAMADDR register
RTC0DAT = 0x00;// write the address of 0x00 to RAMADDR
while ((RTC0ADR & 0x80) == 0x80);
RTC0ADR = 0x0F;// address the RAMDATA register
for (addr = 0; addr < 64; addr++)
{
}
// Read from the entire smaRTClock RAM
RTC0ADR = 0x0E;// address the RAMADDR register
RTC0DAT = 0xA5; // write 0xA5 to every RAM address
while ((RTC0ADR & 0x80) == 0x80);// poll on the BUSY bit
; Enable the smaRTClock
mov RTC0ADR, #06h ; address the RTC0CN register
mov RTC0DAT, #080h ; enable the smaRTClock
jb ACC.7, L0
; Write to the smaRTClock RAM
mov RTC0ADR, #0Eh; address the RAMADDR register
mov RTC0DAT, #20h; write the address of 0x20 to RAMADDR
jb ACC.7, L1
mov RTC0ADR, #0Fh; address the RAMDATA register
mov RTC0DAT, #0A5h; write 0xA5 to RAM address 0x20
jb ACC.7, L2
; Read from the smaRTClock RAM
mov RTC0ADR, #0Eh; address the RAMADDR register
mov RTC0DAT, #20h; write the address of 0x20 to RAMADDR
jb ACC.7, L3
mov RTC0ADR, #0Fh
orl RTC0ADR, #80h
jb ACC.7, L4
movR0, #80h
mov@R0, RTC0DAT
; the 128-byte internal RAM
; poll on the BUSY bit
; poll on the BUSY bit
; poll on the BUSY bit
; poll on the BUSY bit
; read the value of RAM address 0x20 into
; poll on the BUSY bit
; address the RAMDATA register
; initiate a read of the RAMDATA register
// poll on the BUSY bit
Rev. 1.1
C8051F410/1/2/3
189
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