CDR3 Flash (UC3F) EEPROM
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
21-27
Figure 21-10. Erase State Diagram
Table 21-8. Erase Interlock State Descriptions
State
Mode
Next
State
Transition Requirement
S1
Normal Operation:
Normal array reads and register accesses. The
Block protect information can be modified.
S2
T2
Write PE = 1, SES = 1.
S2
Erase Hardware Interlock Write:
Normal read operation still occurs. The UC3F will
accept the erase hardware interlock write. This
write may be to any UC3F array location.
Accesses to the registers are normal register
accesses. A write to UC3FCTL cannot set EHV at
this time. A write to the register is not an erase
hardware interlock write and the UC3F remains in
state S2.
S1
T1
Write SES = 0 or a reset.
S3
T3
Hardware Interlock
A successful write to any UC3F array
location is the erase interlock write. If
the write is to a register the erase
hardware interlock write has not been
done and the UC3F remains in state
S2.
S3
High voltage write enable
Accesses to the registers are normal register
accesses. A write to UC3FCTL can change SES
or EHV.
S1
T6
Write SES = 0 or a reset.
S4
T4
Write EHV = 1.
S4
Erase Operation:
High voltage is applied to the array blocks to erase
the UC3F bit cells, and erase margin reads are
automatically performed by the embedded erase
control logic. During erase the array will not
respond to any address. Accesses to the registers
are allowed. A write to UC3FCTL can change EHV
or HSUS only.
S1
T5
Reset.
S2
T7
Write EHV = 0.
S5
T8
Write HSUS = 1 or disable the UC3F
module.
S1
T1
T2
T3
S2
S4
T4
S3
T5
T6
Reset
S5
T8
T9
T10
T7
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...