MC7457RX1267LC Datasheet, PDF (12/71 Pages) Freescale Semiconductor, Inc – Microprocessor

Electrical and Thermal Characteristics
Table 2. Absolute Maximum Ratings ¹
Characteristic
Symbol Maximum Value Unit Notes
Core supply voltage
V_DD
–0.3 to 1.60
V
2
PLL supply voltage
AV_DD
–0.3 to 1.60
V
2
Processor bus supply voltage
BVSEL = 0
OV_DD
–0.3 to 1.95
V
3, 4
BVSEL = HRESET or OV_DD
OV_DD
–0.3 to 2.7
V
3, 5
L3 bus supply voltage
L3VSEL = ¬HRESET
GV_DD
–0.3 to 1.65
V
3, 6
L3VSEL = 0
GV_DD
–0.3 to 1.95
V
3, 7
L3VSEL = HRESET or GV_DD
GV_DD
–0.3 to 2.7
V
3, 8
Input voltage
Processor bus
V_in
–0.3 to OV_DD + 0.3
V
9, 10
L3 bus
V_in
–0.3 to GV_DD + 0.3
V
9, 10
JTAG signals
V_in
–0.3 to OV_DD + 0.3
V
Storage temperature range
T_stg
–55 to 150
°C
Notes:
1. Functional and tested operating conditions are given in Table 4. Absolute maximum ratings are stress ratings only, and
functional operation at the maximums is not guaranteed. Stresses beyond those listed may affect device reliability or cause
permanent damage to the device.
2. Caution: V_DD/AV_DD must not exceed OV_DD/GV_DD by more than 1.0 V during normal operation; this limit may be exceeded
for a maximum of 20 ms during power-on reset and power-down sequences.
3. Caution: OV_DD/GV_DD must not exceed V_DD/AV_DD by more than 2.0 V during normal operation; this limit may be exceeded
for a maximum of 20 ms during power-on reset and power-down sequences.
4. BVSEL must be set to 0, such that the bus is in 1.8-V mode.
5. BVSEL must be set to HRESET or 1, such that the bus is in 2.5-V mode.
6. L3VSEL must be set to ¬HRESET (inverse of HRESET), such that the bus is in 1.5-V mode.
7. L3VSEL must be set to 0, such that the bus is in 1.8-V mode.
8. L3VSEL must be set to HRESET or 1, such that the bus is in 2.5-V mode.
9. Caution: Vin must not exceed OV_DD or GV_DD by more than 0.3 V at any time including during power-on reset.
10.V_in may overshoot/undershoot to a voltage and for a maximum duration as shown in Figure 2.
Figure 2 shows the undershoot and overshoot voltage on the MPC7457.
MPC7457 RISC Microprocessor Hardware Specifications, Rev. 8
12
Freescale Semiconductor