ZHCSNH1C May 2021 – November 2022 DLPC6540
PRODUCTION DATA
The DLPC6540 provides three external program memory chip selects for devices to access the program memory interface. These are detailed in Table 7-16.
CHIP SELECT NAME | CHIP SELECT USE | DATA BUS WIDTH | ACCESS TIME | MAXIMUM SIZE SUPPORTED (1) |
---|---|---|---|---|
PM_CSZ_0 | Boot FLASH only - Required (2) | 16 bits | < = 120ns | 256Mb |
PM_CSZ_1 | Additional Peripheral Device (or additional FLASH) - Optional | 16 bits | < = 120ns | 256Mb |
PM_CSZ_2 | Additional Peripheral Device - Optional | 16 bits | < = 120ns | 256Mb |
FLASH access timing is software programmable with up to 31 wait states. Additional information about read and write wait state timing is provided in Table 7-17 and Figure 7-1.
PARAMETER | EQUATION (1) |
---|---|
TWSR: Wait State Resolution | 6ns |
Read Wait States (Number of Read Wait States for each CSz read access) |
ROUNDUP(MAX(TACC, TCE,TOE)/TWSR-N) (2)(3) |
Write Wait States for TCSand
TAS (Time from CS/Address activation to WRZ assertion) |
ROUNDUP(MAX(TCS+5ns, TAS+5ns)/TWSR-N) (2) |
Write Wait States for TWP and
TDS (Time from WRZ assertion to WEZ de-assertion) |
ROUNDUP(MAX(TWP+5ns, TDS+5ns)/TWSR-N) (2) |
Write Wait States for TCHand
TDH (Time from CS/Address activation to WRZ assertion) |
ROUNDUP(MAX(TCH+5ns, TDH+5ns)/TWSR-N) (2) |