HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 85

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.7.2
The on-chip supporting module registers and external devices are accessed in a cycle consisting of
three states: T
Access to word data or instruction codes requires two consecutive cycles (six states).
Figure 2.15 shows the access cycle for the on-chip register field. Figure 2.16 shows the associated
pin states. Figures 2.17 (a) and (b) show the read and write access timing for external devices.
Internal address
bus
Internal read
signal
Internal data bus
(read)
Internal write
signal
Internal data bus
(write)
ø
Access to On-Chip Register Field and External Devices
1
, T
2
, and T
Figure 2.15 On-Chip Register Field Access Cycle
3
. Only one byte of data can be accessed per cycle, via an 8-bit data bus.
T
1
state
Bus cycle
T
Address
2
state
Read data
Write data
T
3
state
53