STN8815D0A12H11E STMicroelectronics, STN8815D0A12H11E Datasheet - Page 13

• Manufacturer Part Number: STN8815D0A12H11E
• Manufacturer: STMicroelectronics

Specifications of STN8815D0A12H11E

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Architecture overview
2.5
2.6
2.7
2.8
12/21
Advanced power management unit (PMU)
The dynamic PMU optimizes power consumption of the STn8815A12. It delivers all the
platform clocks, and handles reset management. It also manages GPIO levels during sleep
mode and emergency self-refresh of SDRAM.
The PMU controls the external voltage regulator, in order to change its settings in different
modes. In deep-sleep mode, only GPIOs, real-time clock (RTC), system and reset controller
(SRC), PMU and secured RAM remain in operation.
Voltage scaling supports two modes: standard 1.2 V and overdrive 1.4 V.
The family of power manager ICs, STw481x companion chips, seamlessly interface with the
Nomadik STn8815A12 and optimize global system power consumption leveraging on the
PMU.
ARM926EJ processor
The STn8815A12 CPU is an ARM926EJ reduced instruction set computer (RISC)
processor. This 32-bit processor core supports 32-bit ARM and 16-bit Thumb instruction
sets, enabling the user to trade off between high performance and high code density.
The cached ARM CPU features a memory management unit (MMU) and is clocked at a
frequency up to 350 MHz. It has a 16-Kbyte instruction cache, a 16-Kbyte data cache, and a
128-Kbyte level 2 cache, and supports the Jazelle™ extensions for Java acceleration.
It also includes an embedded trace module (ETM Medium+) for real-time CPU activity
tracing and debugging. It supports 4-bit and 8-bit normal trace mode and 4-bit demultiplexed
trace mode, with normal or half-rate clock.
Embedded memory units
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Advanced security
The device contains 64 Kbytes of ROM and 16 Kbytes of RAM that are only accessible
when the system is in a trusted environment. An advanced security framework enables
M-commerce as well as authentication applications drawing on ST smart card expertise:
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32 Kbytes of public ROM (for boot purposes),
64 Kbytes of secured ROM (for security purposes),
512 Kbytes of public RAM,
16 Kbytes of secured RAM (for security code and/or data),
1 Kbyte backup.
SHA-1/MD5/AES/DES/3DES hardware accelerators,
True random number generator (RNG),
Secured watchdog timer,
Unique die identification.
STn8815A12