atmega32u4-16mu ATMEL Corporation, atmega32u4-16mu Datasheet - Page 410

• Manufacturer Part Number: atmega32u4-16mu
• Description: Atmega32u4 8-bit Avr Microcontroller With 32k Bytes Of Isp Flash And Usb Controller
• Manufacturer: ATMEL Corporation

410
ATmega32U4
Figure 30-10. External Memory Timing (SRWn1 = 1, SRWn0 = 1)
The ALE pulse in the last period (T4-T7) is only present if the next instruction accesses the RAM (internal
or external).
System Clock (CLK
DA7:0 (XMBK = 0)
DA7:0
A15:8
CPU
ALE
WR
RD
)
Prev. addr.
Prev. data
T1
1
Address
Address
4
2
5
T2
6
3a
3b
XX
7
8
13
10
T3
Data
Address
12
Data
16
15
T4
9
T5
()
11
T6
14
T7
7766A–AVR–03/08