Datasheet

 2015 Microchip Technology Inc. Preliminary DS60001320B-page 389
PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family
REGISTER 24-3: EBISMTx: EXTERNAL BUS INTERFACE STATIC MEMORY TIMING REGISTER 
(‘x’ = 0-2)
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-0 R/W-0
— — — — — RDYMODE PAGESIZE<1:0>
23:16
R/W-0 R/W-0 R/W-0 R/W-1 R/W-1 R/W-1 R/W-0 R/W-0
PAGEMODE TPRC<3:0>
(1)
TBTA<2:0>
(1)
15:8
R/W-0 R/W-0 R/W-1 R/W-0 R/W-1 R/W-1 R/W-0 R/W-1
TWP<5:0>
(1)
TWR<1:0>
(1)
7:0
R/W-0 R/W-1 R/W-0 R/W-0 R/W-1 R/W-0 R/W-1 R/W-1
TAS<1:0>
(1)
TRC<5:0>
(1)
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 31-27 Unimplemented: Read as ‘0’
bit 26 RDYMODE: Data Ready Device Select bit
The device associated with register set ‘x’ is a data-ready device, and will use the EBIRDYx pin.
1 = EBIRDYx input is used
0 = EBIRDYx input is not used
bit 25-24 PAGESIZE<1:0>: Page Size for Page Mode Device bits
11 = 32-word page
10 = 16-word page
01 = 8-word page
00 = 4-word page
bit 23 PAGEMODE: Memory Device Page Mode Support bit
1 = Device supports Page mode
0 = Device does not support Page mode
bit 22-19 TPRC<3:0>: Page Mode Read Cycle Time bits
(1)
Read cycle time is TPRC + 1 clock cycle.
bit 18-16 TBTA<2:0>: Data Bus Turnaround Time bits
(1)
Clock cycles (0-7) for static memory between read-to-write, write-to-read, and read-to-read when Chip
Select changes.
bit 15-10 TWP<5:0>: Write Pulse Width bits
(1)
Write pulse width is TWP + 1 clock cycle.
bit 9-8 TWR<1:0>: Write Address/Data Hold Time bits
(1)
Number of clock cycles to hold address or data on the bus.
bit 7-6 TAS<1:0>: Write Address Setup Time bits
(1)
Clock cycles for address setup time. A value of ‘0’ is only valid in the case of SSRAM.
bit 5-0 TRC<5:0>: Read Cycle Time bits
(1)
Read cycle time is TRC + 1 clock cycle.
Note 1: Please refer to Section 47. “External Bus Interface (EBI)” in the “PIC32 Family Reference Manual” for
the EBI timing diagrams and additional information.