Rainbow Electronics ATmega163L - Manual (Page 135)

ATmega163(L)
135
Notes: 1. Includes variation over voltage and temperature after RC oscillator has been calibrated to 1.0 MHz
2. Parallel EEPROM programming takes 1K cycles
Figure 87. Serial Programming Waveforms
.
Table 59. Maximum Programming Times for Non-Volatile Memory
Operation Symbol Number of RC
oscillator cycles Parallel / serial programming Self programming (1)
2.7V 5.0V
Chip Erase t
WD_CE
16K 32 ms 30 ms 17 ms
Flash Write t
WD_FLASH
8K 16 ms 15 ms 8.5 ms
EEPROM Write (2) t
WD_EEPROM
2K 4 ms 3.8 ms 2.2 ms
Fuse/lock bit write t
WD_FUSE
1K 2 ms 1.9 ms 1.1 ms
MSB
MSB
LSB
LSB
SERIAL CLOCK INPUT
PB7(SCK)
SERIAL DATA INPUT
PB5 (MOSI)
PB6 (MISO)
SAMPLE
SERIAL DATA OUTPUT
Table 60. Serial Programming Instruction Set
Instruction Instruction Format Operation
Byte 1 Byte 2 Byte 3 Byte4
Programming Enable
1010 1100 0101 0011 xxxx xxxx xxxx xxxx Enable Serial Programming after
RESET goes low.
Chip Erase 1010 1100 100x xxxx xxxx xxxx xxxx xxxx Chip Erase EEPROM and Flash.
Read Program Memory
0010 H000 xxxa aaaa bbbb bbbb oooo oooo Read H (high or low) data o from
Program memory at word address
a:b.
Load Program Memory
Page
0100 H000 xxxx xxxx xxbb bbbb iiii iiii Write H (high or low) data i to
Program Memory page at word
address b.
Write Program Memory
Page 0100 1100 xxxa aaaa bb xx xxxx iiii iiii Write Program Memory Page at
address a:b.
Read EEPROM Memory
1010 0000 xxxx xxxa bbbb bbbb oooo oooo Read data o from EEPROM
memory at address a:b.
Write EEPROM Memory
1100 0000 xxxx xxxa bbbb bbbb iiii iiii Write data i to EEPROM memory
at address a:b.
Read Lock Bits
0101 1000 xxxx xxxx xxxx xxxx xx65 4321 Read Lock bits. ‘0’ = programmed,
‘1’ = unprogrammed.
Write Lock Bits
1010 1100 111x xxxx xxxx xxxx 1165 4321 Write Lock bits. Set bits 6 - 1 = ’0’ to
program Lock bits.